DELL Precision 3581 Mobile Workstation Owner’s Manual

Safety precautions
The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.
Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly:

• Turn off the system and all attached peripherals.
• Disconnect the system and all attached peripherals from AC power.
• Disconnect all network cables, telephone, and telecommunications lines from the system.
• Use an ESD field service kit when working inside any to avoid electrostatic discharge (ESD) damage.
• After removing any system component, carefully place the removed component on an anti-static mat.
• Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.

Standby power
Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentially powered while turned off.
The internal power enables the system to be remotely turned on (wake on LAN) and suspended into a sleep mode and has other advanced power management features.
Unplugging, pressing, and holding the power button for 15 seconds should discharge residual power in the system board.

Bonding
Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through the use of a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to a painted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment.

Electrostatic discharge—ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors, memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such as  intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is an increasing concern.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.

• Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received a static shock and immediately generates a “No POST/No Video” symptom with a beep code emitted for missing or nonfunctional memory.
• Intermittent – Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms related to the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory integrity, intermittent memory errors, etc.

The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or “walking wounded”) failure.
Perform the following steps to prevent ESD damage:

• Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage.
• Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.
• When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static electricity from your body.
• Before transporting a static-sensitive component, place it in an anti-static container or packaging.

ESD field service kit
The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components: anti-static mat, wrist strap, and bonding wire.

Components of an ESD field service kit
The components of an ESD field service kit are:

• Anti-Static Mat – The anti-static mat is dissipative and parts can be placed on it during service procedures. When using an anti-static mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal on the system being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly on the mat. ESD-sensitive items are safe in your hand, on the ESD mat, in the system, or inside a bag.
• Wrist Strap and Bonding Wire – The wrist strap and bonding wire can be either directly connected between your wrist and bare metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that is  temporarily placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use wireless  wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is recommended to test the  wrist strap and bonding wire at least once per week.
• ESD Wrist Strap Tester – The wires inside of an ESD strap are prone to damage over time. When using an unmonitored kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist strap tester is  the best method for doing this test. If you do not have your own wrist strap tester, check with your regional office to find out if they have one. To perform the test, plug the wrist-strap’s bonding-wire into the tester while it is strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm sounds if the test fails.
• Insulator Elements – It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are insulators and often highly charged.
• Working Environment – Before deploying the ESD Field Service kit, assess the situation at the customer location. For example, deploying the kit for a server environment is different than for a desktop or portable environment. Servers are typically installed in a rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically handling any hardware components
• ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part  arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an ESD-protected work  surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag.
• Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

ESD protection summary
It is recommended to use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

After working inside your computer
About this task
NOTE: Leaving stray or loose screws inside your computer may severely damage your computer.

Steps

1. Replace all screws and ensure that no stray screws remain inside your computer.
2. Connect any external devices, peripherals, or cables you removed before working on your computer.
3. Replace any media cards, discs, or any other parts that you removed before working on your computer.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.

BitLocker
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress, and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system reinstall. For more information about this subject, see Knowledge Article: updating the BIOS on Dell systems with BitLocker enabled.

The installation of the following components triggers BitLocker:

• Hard disk drive or solid state drive
• System board

Recommended tools
The procedures in this document may require the following tools:

• Phillips screwdriver #1
  Plastic scribe

Screw list
NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box.
This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.
NOTE: Screw color may vary with the configuration ordered.
NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surfaces when replacing a component.

Table 32. Screw list

Major components of Precision 3581
The following image shows the major components of Precision 3581.

1. Base cover
2. Battery
3. Heat sink
4. System fan
5. Speakers
6. M.2 2230/2280 solid-state drive thermal shield for solid-state drive Slot 1
7. Smart card reader (optional)
8. System board
9. Right hinges
10. Touchpad
11. Camera module
12. Display bezel
13. Display panel
14. Display cable| 15. Display back cover
16. Sensor board with cable
17. Left hinges
18. Palm-rest assembly
19. Keyboard
20. Coin-cell battery
21. Power button
22. Assembly inner frame
23. Fingerprint reader (optional)
24. Memory module
25. 4G WWAN card
26. 4G WWAN card bracket
27. WLAN card
---|---

NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.

Removing and installing Customer Replaceable Units (CRUs)

The replaceable components in this chapter are Customer Replaceable Units (CRUs).
CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures.
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

SIM card tray
Removing the SIM card tray (Optional)

Prerequisites

1. Follow the procedure in Before working inside your computer.

NOTE: The procedure for SIM card tray removal is only applicable for computers that are shipped with a WWAN module.
CAUTION: Removing the SIM card when the computer is turned on might cause data loss or damage to the card.
Ensure that your computer is turned off or the network connections are disabled.

About this task

Steps

1. Insert a pin into the release hole to release the SIM card tray.
2. Push the pin to disengage the lock, and eject the SIM card tray.
3. Slide the SIM card tray out of the slot on the computer.
4. Remove the SIM card from the SIM card tray.
5. Slide and push the SIM card tray back into the slot.

Installing the SIM card tray (Optional)
Prerequisites
NOTE: The procedure for SIM card tray installation is only applicable for computers that are shipped with a WWAN module.
If you are replacing a component, remove the existing component before performing the installation procedure.![DELL Precision 3581 Mobile Workstation

• About task](https://manuals.plus/wp-content/uploads/2024/01/DELL- Precision-3581-Mobile-Workstation-About-task.jpg)

Steps

1. Insert a pin into the release hole to release the SIM card tray.
2. Push the pin to disengage the lock, and eject the SIM card tray.
3. Slide the SIM card tray out of the slot on the computer.
4. Align and place the SIM card in the dedicated slot on the SIM card tray, with the metallic contact of the SIM card facing up.
5. Align the SIM card tray with the slot on the computer and carefully slide it in.
6. Slide the SIM card tray into the slot, until it clicks into place.

Next steps

1. Follow the procedure in After working inside your computer.

Base cover
Removing the base cover

Prerequisites

1. Follow the procedure in Before working inside your computer.
   NOTE: Ensure that your computer is in Service Mode. For more information, see Before working inside your computer.
   CAUTION: If you are unable to turn on the computer, if your computer is unable to enter Service Mode, or the computer does not support Service Mode, proceed to disconnect the battery cable.

2. Remove the SIM card.
   About this task
   NOTE: Before removing the base cover, ensure that there is no SD card installed in the SD card slot on your computer.
   The following images indicate the location of the base cover and provide a visual representation of the removal procedure.

Steps

1. Loosen the eight captive screws that secure the base cover to the palm-rest assembly.

2. Using a plastic scribe, pry open the base cover from the recesses located in the U-shaped indents at the top edge of the base cover near the hinges.

3. Lift the base cover off the keyboard and palm-rest assembly.
   NOTE: Ensure that your computer is in Service Mode. If your computer is unable to enter Service Mode, disconnect the battery cable from the system board. To disconnect the battery cable, follow step 4 and 5.

4. Disconnect the battery cable from the system board.

5. Press and hold the power button for five seconds to ground the computer and drain the flea power.

Installing the base cover
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the base cover and provide a visual representation of the installation procedure. NOTE:
If battery is not a pre-requisite and if you have disconnected the battery cable, ensure to connect the battery cable. To connect the battery cable, follow step 1 and step 2 in the procedure.

Steps

1. Connect the battery cable to the connector on the system board.
2. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and then snap the base cover into place.
3. Tighten the eight captive screws that secure the base cover to the palm-rest and keyboard assembly.

Next steps

1. Install the SIM card.
2. Follow the procedure in After working inside your computer.
   NOTE: Ensure that your computer is in Service Mode. For more information, see Before working inside your computer

Wireless card
Removing the WLAN card

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.

About this task
The following image(s) indicate the location of the WLAN card and provides a visual representation of the removal procedure.

Steps

1. Loosen the screw (M2x3) that secures the WLAN-card bracket to the WLAN card and palm-rest and keyboard assembly.
2. Lift the WLAN-card bracket off the WLAN card.
3. Disconnect the antenna cables from the WLAN card.
4. Slide and remove the wireless card off the WLAN-card slot.

Installing the WLAN card

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the WLAN card and provides a visual representation of the installation procedure.

Steps

1. Connect the antenna cables to the WLAN card.
   The following table provides the antenna-cable color scheme for the WLAN card that is supported by your computer.
   Table 33. Antenna-cable color scheme Connectors on the
   wireless card| Antenna-cable color| Silkscreen marking
   ---|---|---
   Main| White| MAIN| △ (white triangle)
   Auxiliary| Black| AUX| ▲ (black triangle)
2. Align the notch on the WLAN card with the tab on the WLAN-card slot.
3. Adhere the WLAN card at an angle into the WLAN-card slot
4. Align the screw hole on the WLAN-card bracket with the screw hole on the WLAN card and palm-rest and keyboard assembly.
5. Place the screw (M2x3) that secures the WLAN-card bracket to the WLAN card and the palm-rest and keyboard assembly.

Next steps

1. Install the base cover.
2. Follow the procedure in After working inside your computer.

Wireless Wide Area Network (WWAN) card
Removing the 4G WWAN card (Optional)

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.

About this task
NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 4G WWAN card and provides a visual representation of the removal procedure.

Steps

1. Lift the 4G WWAN-card shield off the 4G WWAN card.
2. Remove the screw (M2x3) that secures the 4G WWAN-card bracket to the 4G WWAN card.
3. Lift the 4G WWAN-card bracket off the 4G WWAN card.
4. Disconnect the antenna cables from the 4G WWAN card.
5. Slide and remove the 4G WWAN card off the 4G WWAN-card slot on the system board.

Installing the 4G WWAN card (Optional)

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 4G WWAN card and provides a visual representation of the installation procedure.

Steps

1. Align the notch on the 4G WWAN card with the tab on the 4G WWAN-card slot.
2. Insert the 4G WWAN card at an angle into the 4G WWAN-card slot .
3. Connect the antenna cables to the 4G WWAN card.
   The following table provides the antenna-cable color scheme for the 4G WWAN card that is supported by your computer.
   Table 34. Antenna-cable color scheme** Connectors on the WWAN card| Antenna-cable color| Silkscreen marking**
   ---|---|---
   D/G| Black with a thin white stripe| 6 Aux| △ (white triangle)
   M2| Blue| 8 M2| △ (white triangle)
   M1| Orange| 7 M1| △ (white triangle)
   M| White with a thin gray stripe| Main 5| ▲ (black triangle)
4. Align the screw hole on the 4G WWAN-card bracket with the screw hole on the 4G WWAN card.
5. Replace the screw (M2x3) that secures the 4G WWAN bracket to the 4G WWAN card.
6. Align and place the 4G WWAN-card shield over the 4G WWAN card.

Next steps

1. Install the base cover.
2. Follow the procedure in After working inside your computer.

Removing the 5G WWAN card (Optional)
Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.

About this task
NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 5G WWAN card and provides a visual representation of the removal procedure.

Steps

1. Remove the screw (M2x3) that secures the 5G WWAN-card bracket to the 5G WWAN card.
2. Lift the 5G WWAN-card bracket off the 5G WWAN card.
3. Remove the two screws (M2x3) that secure the 5G WWAN-card shield to the palm-rest and keyboard assembly.
4. Lift the 5G WWAN-card shield off the 5G WWAN card.
5. Disconnect the antenna cables from the 5G WWAN card.
6. Slide and remove the 5G WWAN card off the 5G WWAN-card slot on the system board.

Installing the 5G WWAN card (Optional)
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 5G WWAN card and provides a visual representation of the installation procedure.

Steps

1. Connect the antenna cables to the 5G WWAN card.
   The following table provides the antenna-cable color scheme for the 5G WWAN card that is supported by your computer.
   Table 35. Antenna-cable color scheme**** Connectors on the WWAN card| Antenna-cable color| Silkscreen marking
   ---|---|---
   D/G| Black with a thin white stripe| ANT3 D/G| △ (white triangle)
   M2| Blue| ANT2 M2| △ (white triangle)
   M1| Orange| ANT1 M1| △ (white triangle)
   M| White with a thin gray stripe| ANT0 M| △ (white triangle)
2. Align the notch on the 5G WWAN card with the tab on the 5G WWAN-card slot.
3. Insert the 5G WWAN card at an angle into the 5G WWAN-card slot .
4. Align the screw holes on the 5G WWAN-card shield with the screw holes on the palm-rest and keyboard assembly.
5. Replace the two screws (M2x3) that secure the 5G WWAN-card shield to the palm-rest and keyboard assembly.
6. Align the screw hole on the 5G WWAN-card bracket with the screw hole on the 5G WWAN card.
7. Replace the screw (M2x3) that secures the 5G WWAN bracket to the 5G WWAN card.

Next steps

1. Install the base cover.
2. Follow the procedure in After working inside your computer.

Memory module
Removing the memory module

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
The following image(s) indicate the location of the memory module and provides a visual representation of the removal procedure.

Steps

1. Using your fingertips, spread apart the securing clips on the memory-module slot until the memory module pops up.
2. Slide and remove the memory module from the memory-module slot on the system board.
   NOTE: Repeat step 1 and step 2 if there are more than one memory module installed on your computer.

Installing the memory module

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the memory module and provides a visual representation of the installation procedure.

Steps

1. Align the notch on the memory module with the tab on the memory-module slot.
2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place.
   NOTE: If you do not hear the click, remove the memory module and reinstall it.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Solid-state drive
Removing the M.2 2230 solid-state drive from Slot 1

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
The following image(s) indicate the location of the M.2 2230 solid-state drive in Slot 1 and provides a visual representation of the removal procedure.

Steps

1. Remove the screw (M2x3) that secures the M.2 2230 solid-state drive to the solid-state drive bracket and palm-rest assembly.
2. Slide and lift the M.2 2230 solid-state drive off the solid-state drive slot.
3. Remove the M.2 2230 solid-state drive mounting bracket from the palm-rest assembly.

Installing the M.2 2230 solid-state drive in Slot 1

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the M.2 2230 solid-state drive in Slot 1 and provides a visual representation of the installation procedure.

Steps

1. Place the M.2 2230 solid-state drive mounting bracket on its slot on the palm-rest assembly.
2. Align the notch on the M.2 2230 solid-state drive with the tab on the M.2 2230 solid-state drive slot.
3. Slide the M.2 2230 solid-state drive into the M.2 2230 solid-state drive slot.
4. Replace the screw (M2x3) that secures the M.2 2230 solid-state drive to the solid-state drive mounting bracket and palm-rest assembly.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Removing the M.2 2280 solid-state drive from Slot 1

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
The following image(s) indicate the location of the M.2 2280 solid-state drive in Slot 1 and provides a visual representation of the removal procedure.

Steps

1. Remove the screw (M2x3) that secures the M.2 2280 solid-state drive to the solid-state drive bracket and palm-rest assembly.
2. Slide and lift the M.2 2280 solid-state drive off the solid-state drive slot.
3. Remove the M.2 2280 solid-state drive transfer bracket.

Installing the M.2 2280 solid-state drive in Slot 1

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the M.2 2280 solid-state drive in Slot 1 and provides a visual representation of the installation procedure.

Steps

1. Place the M.2 2280 solid-state drive holder on its slot on the palm-rest assembly.
2. Align the notch on the M.2 2280 solid-state drive with the tab on the M.2 2280 solid-state drive slot.
3. Slide the M.2 2280 solid-state drive into the M.2 2280 solid-state drive slot.
4. Replace the screw (M2x3) that secures the M.2 2280 solid-state drive to the solid-state drive holder and palm-rest assembly.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Removing the M.2 2230 solid-state drive from Slot 2

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
The following image(s) indicate the location of the M.2 2230 solid-state drive in Slot 2 and provides a visual representation of the removal procedure.

Steps

1. Remove the two screws (M2x3) that secure the solid-state drive thermal shield to the palm-rest assembly.
2. Lift the solid-state drive thermal shield off the palm-rest assembly.
3. Remove the screw (M2x3) that secures the M.2 2230 solid-state drive to the palm-rest assembly.
4. Slide and lift the M.2 2230 solid-state drive off the solid-state drive slot.
5. Remove the M.2 2230 solid-state drive holder from the palm-rest assembly.

Installing the M.2 2230 solid-state drive in Slot 2

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the M.2 2230 solid-state drive in Slot 2 and provides a visual representation of the installation procedure.

Steps

1. Place the M.2 2230 solid-state drive holder on its slot on the palm-rest assembly.
2. Align the notch on the M.2 2230 solid-state drive with the tab on the M.2 2230 solid-state drive slot.
3. Slide the M.2 2230 solid-state drive into the M.2 2230 solid-state drive slot.
4. Replace the screw (M2x3) that secures the M.2 2230 solid-state drive to the palm-rest assembly.
5. Align the solid-state drive thermal shield on the palm-rest assembly.
6. Replace the two screws (M2x3) that secure the solid-state drive thermal shield to the palm-rest assembly.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Removing and installing Field Replaceable Units (FRUs)

The replaceable components in this chapter are Field Replaceable Units (FRUs).
CAUTION: The information in this section is intended for authorized service technicians only.
CAUTION: To avoid any potential damage to the component or loss of data, ensure that an authorized service technician replaces the Field Replaceable Units (FRUs).
CAUTION: Dell Technologies recommends that this set of repairs, if needed, to be conducted by trained technical repair specialists.
CAUTION: As a reminder, your warranty does not cover damages that may occur during the courses of FRU repairs that are not authorized by Dell Technologies.
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Battery

Rechargeable Li-ion battery precautions
CAUTION:

• Exercise caution when handling rechargeable Li-ion batteries.

• Discharge the battery completely before removing it.
  Disconnect the AC power adapter from the system and operate the computer solely on battery power—the battery is fully discharged when the computer no longer turns on when the power button is pressed.

• Do not crush, drop, mutilate, or penetrate the battery with foreign objects.

• Do not expose the battery to high temperatures, or disassemble battery packs and cells.

• Do not apply pressure to the surface of the battery.

• Do not bend the battery.

• Do not use tools of any kind to pry on or against the battery.

• Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or damage to the battery and other system components.

• If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a rechargeable Li-ion battery can be dangerous.
  In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.

•  Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.

• Swollen batteries should not be used and should be replaced and disposed properly. For guidelines on how to handle and replace swollen rechargeable Li-ion batteries, see Handling swollen rechargeable Li-ion batteries.

Removing the battery
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
CAUTION: Removing the battery resets the BIOS setup program’s settings to default. It is recommended that you note the BIOS setup program’s settings before removing the battery.
The following image(s) indicate the location of the battery and provides a visual representation of the removal procedure.

Steps

1. Disconnect the battery cable from the system board (if not disconnected earlier).
2. Loosen the three or five captive screws, as applicable, that secure the battery to the palm-rest assembly.
3. Lift the battery off the palm-rest assembly.
4. Flip the battery and peel the tape that adheres the battery cable to the battery.
5. Remove the battery cable from the routing guides on the battery.
6. Disconnect the battery cable from the connector on the battery.
7. Remove the battery cable away from the battery.

Installing the battery
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the battery and provides a visual representation of the installation procedure.

Steps

1. Align and route the battery cable through the routing guides on the battery.
2. Adhere the tape that secures the battery cable to the battery.
3. Connect the battery cable to the connector on the battery.
4. Flip the battery.
5. Using the alignment posts, place the battery on the palm-rest assembly.
6. Align the screw holes on the battery with the screw holes on the palm-rest assembly.
7. Tighten the three or five captive screws, as applicable, that secure the battery to the palm-rest assembly.
8. Connect the battery cable to the system board.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Assembly inner frame

Removing the assembly-inner frame
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.

About this task
The following images indicate the location of the assembly-inner frame and provide a visual representation of the removal procedure.

Steps

1. Disconnect the speaker cable from the system board.
2. Remove the speaker cables from the routing guides on the palm-rest assembly.
3. Remove the twelve screws (M2x3) that secure the assembly-inner frame to the palm-rest assembly.
4. Remove the assembly-inner frame off the palm-rest assembly.

Installing the assembly-inner frame
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the assembly-inner frame and provide a visual representation of the installation procedure.

Steps

1. Align the screw holes on the assembly-inner frame with the screw holes on the system board and the palm-rest assembly.
2. Replace the twelve screws (M2x3) that secure the assembly-inner frame to the palm-rest assembly.
3. Connect the speaker cable to the system board.
4. Route the speaker cables through the routing guides on the palm-rest assembly.

Next steps

1. Install the WLAN card.
2. Install the 4G WWAN card or 5G WWAN card, as applicable.
3. Install the battery.
4. Install the base cover.
5. Install the SIM card.
6. Follow the procedure in After working inside your computer.

Touchpad

Removing the touchpad
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.
7. Remove the assembly inner frame.

About this task
The following images indicate the location of the touchpad and provide a visual representation of the removal procedure.

Steps

1. Open the latch and disconnect the touchpad cable from the connector on the system board.
2. Open the latch and disconnect the keyboard cable from the connector on the touchpad.
3. Peel the keyboard cable from the touchpad.
4. Open the latch and disconnect the keyboard-backlight cable from the connector on the touchpad.
5. Remove the five screws (M2x2.5) that secure the touchpad to the palm-rest assembly.
6. Lift up the flap below the touchpad cable and remove the screw (M2x2.5) that secures the touchpad to the palm-rest assembly.
7. Lift the touchpad off the palm-rest assembly.

Installing the touchpad
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the touchpad and provide a visual representation of the installation procedure.

Steps

1. Place the touchpad into its slot on the palm-rest assembly.
2. Align the screw holes on the touchpad to the screw holes on the palm-rest assembly.
3. Replace the five screws (M2x2.5) that secure the touchpad to the palm-rest assembly.
4. Lift up the flap below the touchpad cable and replace the screw (M2x2.5) that secures the touchpad to the palm-rest assembly.
5. Connect the touchpad cable to the connector on the touchpad and close the latch to secure the cable.
6. Connect the keyboard-backlight cable to the connector on the touchpad and close the latch to secure the cable.
7. Connect the keyboard cable to the connector on the system board and close the latch to secure the cable.
8. Adhere the keyboard cable to the touchpad.

Next steps

1. Install the assembly inner frame.
2. Install the WLAN card.
3. Install the 4G WWAN card or 5G WWAN card, as applicable.
4. Install the battery.
5. Install the base cover.
6. Install the SIM card.
7. Follow the procedure in After working inside your computer.

Speakers

Removing the speakers
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.

About this task
The following images indicate the location of the speakers and provide a visual representation of the removal procedure.

Steps

1. Disconnect the speaker cable from the system board.
2. Remove the speaker cables from the routing guides on the palm-rest assembly.
3. Lift the right and left speakers, along with its cable, off the palm-rest assembly.

Installing the speakers
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the speakers and provide a visual representation of the installation procedure.

Steps

1. Using the alignment posts, place the left and right speakers into their slots on the palm-rest assembly.
2. Route the speaker cable through the routing guides on the palm-rest assembly.
3. Connect the speaker cable to the system board.

Next steps

1. Install the battery.
2. Install the base cover.
3. Install the SIM card.
4. Follow the procedure in After working inside your computer.

Coin-cell battery
Removing the coin-cell battery

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the assembly-inner frame.

About this task
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the removal procedure.

Steps

1. Disconnect the coin-cell battery cable from the system board.
2. Release the coin-cell battery cable from the routing guide on the palm-rest assembly.
3. Peel the coin-cell battery, along with its cable, off the palm-rest assembly.

Installing the coin-cell battery

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the installation procedure.

Steps

1. Adhere the coin-cell battery on to the coin-cell battery slot on the palm-rest assembly.
2. Route the coin-cell battery cable through the routing guides on the palm-rest assembly.
3. Connect the coin-cell battery cable to the connector on the system board.

Next steps

1. Install the assembly-inner frame.
2. Install the battery.
3. Install the base cover.
4. Install the SIM card.
5. Follow the procedure in After working inside your computer.

Fan and heat-sink assembly

Removing the fan and heat-sink assembly (Discrete GPU)
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
NOTE: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it.
NOTE: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.

The following images indicate the location of the heat sink and provide a visual representation of the removal procedure.
For computers shipped with discrete graphics For computers shipped with integrated graphics

Steps

1. Loosen the four or seven captive screws that secure the heat sink to the system board.
   NOTE: Loosen the captive screws in the reverse sequential order mentioned on the heat sink [4 > 3 > 2 > 1] or [7 > 6 > 5 > 4 > 3 > 2 > 1].
   NOTE: The number of screws varies depending on the configuration ordered.

2. Remove the two screws (M2x4) that secure the heat sink to the system board.

3. Lift the heat sink from the system board.

Installing the fan and heat-sink assembly (Discrete GPU)
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
NOTE: If either the system board or the heat sink is replaced, use the thermal grease provided in the kit to ensure that thermal conductivity is achieved.
The following images indicate the location of the heat sink and provide a visual representation of the installation procedure.
For computers shipped with integrated graphics

For computers shipped with discrete graphics

Steps

1. Place the heat sink on the system board.

2. Tighten the four or seven captive screws that secure the heat sink to the system board.
   NOTE: Tighten the captive screws in the sequential order mentioned on the heat sink [1 > 2 > 3 > 4] or [1 > 2 > 3 > 4 >5 > 6 > 7].
   NOTE: The number of screws varies depending on the configuration ordered.

3. Replace the two screws (M2x4) that secure the heat sink to the system board.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

Removing the fan and heat-sink assembly (Integrated GPU)
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.

About this task
NOTE: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it.
NOTE: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.

The following images indicate the location of the heat sink and provide a visual representation of the removal procedure.
For computers shipped with discrete graphics For computers shipped with integrated graphics

Steps

1. Loosen the four or seven captive screws that secure the heat sink to the system board.
   NOTE: Loosen the captive screws in the reverse sequential order mentioned on the heat sink [4 > 3 > 2 > 1] or [7 > 6 > 5 > 4 > 3 > 2 > 1].
   NOTE: The number of screws varies depending on the configuration ordered.

2. Remove the two screws (M2x4) that secure the heat sink to the system board.

3. Lift the heat sink from the system board.

Installing the fan and heat-sink assembly (Integrated GPU)
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
NOTE: If either the system board or the heat sink is replaced, use the thermal grease provided in the kit to ensure that thermal conductivity is achieved.

The following images indicate the location of the heat sink and provide a visual representation of the installation procedure.
For computers shipped with integrated graphics For computers shipped with discrete graphics

Steps

1. Place the heat sink on the system board.

2. Tighten the four or seven captive screws that secure the heat sink to the system board.
   NOTE: Tighten the captive screws in the sequential order mentioned on the heat sink [1 > 2 > 3 > 4] or [1 > 2 > 3 > 4 >5 > 6 > 7].
   NOTE: The number of screws varies depending on the configuration ordered.

3. Replace the two screws (M2x4) that secure the heat sink to the system board.

Next steps

1. Install the base cover.
2. Install the SIM card.
3. Follow the procedure in After working inside your computer.

System board

Removing the system board
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.
7. Remove the memory modules.
8. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1.
9. Remove the M.2 2230 solid-state drive from Slot 2.
10. Remove the coin-cell battery.
11. Remove the heat sink.
12. Remove the assembly inner frame.

About this task
The following images indicate the system board connectors.

1. WWAN card connector
2. WLAN card connector
3. eDP cable connector
4. Memory modules
5. Display cable connector
6. System fan connector
7. Solid-state drive Slot 1| 8. Touchpad cable connector
9. Battery cable connector
10. Solid-state drive Slot 2
11. USH-cable connector
12. Coin-cell battery cable connector
13. Speaker cable connector
---|---

The following images indicate the location of the system board and provide a visual representation of the removal procedure.

Steps

1. Remove the two screws (M2x3) that secure the display-cable bracket to the palm-rest assembly..
2. Lift the display-cable bracket off the palm-rest assembly.
3. Remove the three screws (M2x4) that secure the Type-C bracket to the palm-rest assembly..
4. Lift the Type-C bracket off the palm-rest assembly.
5. Disconnect the fingerprint-reader cable from the system board.
6. Disconnect the eDP cable from the connector on the system board.
7. Disconnect the display cable from the connector on the system board.
8. Remove the display cable from the routing guides on the system board.
9. Open the latch and disconnect the touchpad cable from the connector on the system board.
10. Open the latch and disconnect the USH cable from the USH module.
11. Disconnect the coin-cell battery cable from the connector on the system board.
12. Disconnect the speaker cable from the connector on the system board.
13. Remove the three screws (M2x3) that secure the system board to the palm-rest assembly.
14. Lift the system board off the palm-rest assembly.

Installing the system board
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the system board connectors.

1. WWAN card connector
2. WLAN card connector
3. eDP cable connector
4. Memory modules
5. Display cable connector
6. System fan connector
7. Solid-state drive Slot 1| 8. Touchpad cable connector
9. Battery cable connector
10. Solid-state drive Slot 2
11. USH-cable connector
12. Coin-cell battery cable connector
13. Speaker cable connector
---|---

Steps

1. Align and place the system board on its slot on the palm-rest assembly.
2. Replace the three screws (M2x3) that secure the system board to the palm-rest assembly.
3. Connect the fingerprint-reader cable from the system board.
4. Connect the eDP cable to the connector on the system board.
5. Connect the display cable to the connector on the system board.
6. Route the display cable through the routing guides on the system board.
7. Connect the touchpad cable to the connector on the system board and close the latch.
8. Connect the USH cable to the USH module and close the latch.
9. Connect the coin-cell battery cable to the connector on the system board.
10. Connect the speaker cable to the connector on the system board.
11. Place the display-cable bracket over the display cable.
12. Replace the two screws (M2x3) that secure the display-cable bracket to the palm-rest assembly..
13. Place the Type-C bracket on its slot on the palm-rest assembly.
14. Replace the three screws (M2x4) that secure the Type-C bracket to the palm-rest assembly..

Next steps

1. Install the assembly inner frame.
2. Install the heat sink.
3. Install the coin-cell battery.
4. Install the M.2 2230 solid-state drive in Slot 2.
5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1.
6. Install the memory modules.
7. Install the WLAN card.
8. Install the 4G WWAN card or 5G WWAN card, as applicable.
9. Install the battery.
10. Install the base cover.
11. Install the SIM card.
12. Follow the procedure in After working inside your computer.

Power button

Removing the power button
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.
7. Remove the memory modules.
8. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as applicable.
9. Remove the M.2 2230 solid-state drive from Slot 2, if applicable.
10. Remove the heat sink (discrete GPU) or heat sink (integrated GPU), as applicable.
11. Remove the assembly-inner frame.
12. Remove the system board.

About this task
The following images indicate the location of the power button and provide a visual representation of the removal procedure.

Steps

1. Remove the two (M2x2.5) screws that secure the power button to the palm-rest assembly.
2. Lift the power button, along with the cable. off the palm-rest assembly.

Installing the power button
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the power board and provide a visual representation of the installation procedure.

Steps

1. Align and place the power button on the palm-rest assembly.
2. Replace the two (M2x2.5) screws to secure the power button to the palm-rest assembly.

Next steps

1. Install the system board.
2. Install the assembly-inner frame.
3. Install the heat sink (discrete GPU) or heat sink (integrated GPU), as applicable.
4. Install the M.2 2230 solid-state drive in Slot 2, if applicable.
5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1, as applicable.
6. Install the memory modules.
7. Install the WLAN card.
8. Install the 4G WWAN card or 5G WWAN card, as applicable.
9. Install the battery.
10. Install the base cover.
11. Install the SIM card.
12. Follow the procedure in After working inside your computer.

Power button with optional fingerprint reader

Removing the power button with optional fingerprint reader
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.
7. Remove the memory modules.
8. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as applicable.
9. Remove the M.2 2230 solid-state drive from Slot 2, if applicable.
10. Remove the heat sink (discrete GPU) or heat sink (integrated GPU), as applicable.
11. Remove the assembly-inner frame.
12. Remove the system board.

About this task
The following images indicate the location of the power button and provide a visual representation of the removal procedure.

Steps

1. Remove the two (M2x2.5) screws that secure the power button to the palm-rest assembly.
2. Lift the power button, along with the cable. off the palm-rest assembly.

Installing the power button with optional fingerprint reader
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the power board and provide a visual representation of the installation procedure.

Steps

1. Align and place the power button on the palm-rest assembly.
2. Replace the two (M2x2.5) screws to secure the power button to the palm-rest assembly.

Next steps

1. Install the system board.
2. Install the assembly-inner frame.
3. Install the heat sink (discrete GPU) or heat sink (integrated GPU), as applicable.
4. Install the M.2 2230 solid-state drive in Slot 2, if applicable.
5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1, as applicable.
6. Install the memory modules.
7. Install the WLAN card.
8. Install the 4G WWAN card or 5G WWAN card, as applicable.
9. Install the battery.
10. Install the base cover.
11. Install the SIM card.
12. Follow the procedure in After working inside your computer.

Keyboard

Removing the keybo
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the 4G WWAN card or 5G WWAN card, as applicable.
6. Remove the WLAN card.
7. Remove the memory modules.
8. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1.
9. Remove the M.2 2230 solid-state drive from Slot 2.
10. Remove the heat sink.
11. Remove the assembly inner frame.
12. Remove the system board.

About this task
The following images indicate the location of the keyboard and provide a visual representation of the removal procedure.

Steps

1. Open the latch and disconnect the keyboard cable from the touchpad.
2. Open the latch and disconnect the keyboard-backlight cable from the touchpad.
3. Remove the twenty one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly.
4. Lift the keyboard bracket off the palm-rest assembly.
5. Turn the keyboard bracket over.
6. Remove the ten screws (M2x2) that secure the keyboard to the keyboard bracket.
7. Lift the keyboard off the keyboard bracket.

Installing the keyboard
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the keyboard and provide a visual representation of the installation procedure.

Steps

1. Align and place the keyboard on the keyboard bracket.
2. Replace the ten screws (M2x2) to secure the keyboard to the keyboard bracket.
3. Turn the keyboard bracket over.
4. Align and place the keyboard bracket on the palm-rest assembly.
5. Replace the twenty one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly.
6. Connect the keyboard-backlight cable to the connector on the system board and close the latch to secure the cable.
7. Connect the keyboard cable to the connector on the system board and close the latch to secure the cable.

Next steps

1. Install the system board.
2. Install the assembly inner frame.
3. Install the heat sink.
4. Install the M.2 2230 solid-state drive in Slot 2.
5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1.
6. Install the memory modules.
7. Install the WLAN card.
8. Install the 4G WWAN card or 5G WWAN card, as applicable.
9. Install the battery.
10. Install the base cover.
11. Install the SIM card.
12. Follow the procedure in After working inside your computer.

Display assembly

Removing the display assembly
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.

About this task
The following images indicate the location of the display assembly and provide a visual representation of the removal procedure.

Steps

1. Remove the two (M2x3) screws that secure the display-cable bracket to the system board.
2. Lift the display-cable bracket off the palm-rest assembly.
3. Disconnect the display cable from the system board.
4. Remove the display cable from the routing guides on the system board.
5. Lift up the black flap near the antenna cables and uncover the sensor-board cable.
6. Disconnect the sensor-board cable from the connector on the system board.
7. Remove the WLAN and WWAN antennas (where applicable) from the routing guides on the system board.
8. Remove the six screws (M2.5×5) that secure the left and right display hinges to the palm-rest assembly.
9. Carefully lift the display assembly from the palm-rest assembly.
10. Carefully place the display assembly on a clean, flat surface.

Installing the display assembly
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display assembly and provide a visual representation of the installation procedure.

Steps

1. Place the palm-rest assembly at the edge of the table with the speakers facing away from the edge.
2. Align the screw holes on the palm-rest assembly with the screw holes on the display hinges.
3. Replace the six screws (M2.5×5) that secure the left and right display hinges to the palm-rest assembly.
4. Connect the sensor-board cable to the connector on the system board.
5. Cover the sensor-board cable with the black flap near the antenna cables.
6. Route the WLAN and WWAN antennas (where applicable) from the routing guides on the system board.
7. Connect the display cable to the system board.
8. Adhere the tape that secures the display cable to the system board.
9. Align the screw holes on the display-cable bracket with the screw holes on the system board.
10. Replace the two (M2x3) screws that secure the display cable bracket to the system board.

Next steps

1. Install the WLAN card.
2. Install the 4G WWAN card or 5G WWAN card, as applicable.
3. Install the base cover.
4. Install the SIM card.
5. Follow the procedure in After working inside your computer.

Display bezel

Removing the display bezel
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.

About this task
The following images indicate the location of the display bezel and provide a visual representation of the removal procedure.

Steps

1. Carefully pry up the display bezel starting from the recesses on the bottom edge of the display near the left and right hinges.
2. Pry along the outside edge of the display bezel and work your way around the entire display bezel until the display bezel is separated from the display cover.
3. Lift the display bezel from the display assembly.

Installing the display bezel
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display bezel and provide a visual representation of the installation procedure.

Steps

1. Align and place the display bezel on the display assembly.
2. Gently snap the display bezel into place.

Next steps

1. Install the display assembly.
2. Install the WLAN card.
3. Install the 4G WWAN card or 5G WWAN card, as applicable.
4. Install the base cover.
5. Install the SIM card.
6. Follow the procedure in After working inside your computer.

Display panel

Removing the display panel
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Reove the display assembly.
7. Remove the display bezel.

About this task
The following images indicate the location of the display panel and provide a visual representation of the removal procedure.

Steps

1. Remove the four screws (M2.5×3.5) that secure the display panel to the display back cover.
2. Lift and open the display panel to access the display cable.
3. Peel the conductive tape on the display cable connector.
4. Open the latch and disconnect the cable from the connector on the display panel.
5. Lift the display panel away from the display back cover.

Installing the display panel
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display panel and provide a visual representation of the installation procedure.

Steps

1. Connect the display cable to the connector on the display panel and close the latch.

2. Adhere the conductive tape to secure the display cable to the display panel.

3. Close the display panel and the display back cover to assemble.
   NOTE: Ensure that the display panel tabs are inserted into the slots on the display cover.

4. Replace the four screws (M2.5×3.5) to secure the display panel to the display back cover.

Next steps

1. Install the display bezel.
2. Install the display assembly.
3. Install the WLAN card.
4. Install the 4G WWAN card or 5G WWAN card, as applicable.
5. Install the base cover.
6. Install the SIM card.
7. Follow the procedure in After working inside your computer.

Camera module

Removing the camera module
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.
7. Remove the display bezel.
8. Remove the display panel.

About this task
The following images indicate the location of the camera module and provide a visual representation of the removal procedure.

Steps

1. Peel the tape that secures the camera cable to the to the display back cover.
2. Disconnect the camera cable from the camera.
3. Carefully pry up the camera module starting from the prying point at the bottom edge of the camera module.
4. Lift the camera module from the display back cover.

Installing the camera module
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the camera module and provide a visual representation of the installation procedure.

Steps

1. Align and place the camera module into the slot on the display back cover.
2. Connect the camera module cable to the connector on the camera module.
3. Adhere the tape to secure the camera cable to the camera.

Next steps

1. Install the display panel.
2. Install the display bezel.
3. Install the display assembly.
4. Install the WLAN card.
5. Install the 4G WWAN card or 5G WWAN card, as applicable.
6. Install the base cover.
7. Install the SIM card.
8. Follow the procedure in After working inside your computer.

Display hinges

Removing the display hinges
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.
7. Remove the display bezel.
8. Remove the display panel.

About this task
The following images indicate the location of the display hinges and provide a visual representation of the removal procedure.

Steps

1. Remove the screw (M2.5×3.5) that secures the right hinge to the display back cover.
2. Lift and remove the right hinge from the display back cover.
3. Remove the screw (M2.5×3.5) that secures the left hinge to the display back cover.
4. Lift and remove the left hinge from the display back cover.

Installing the display hinges
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display hinges and provide a visual representation of the installation procedure.

Steps

1. Align the screw hole on the left hinge with the screw hole on the display back cover.
2. Replace the screw (M2.5×3.5) that secures the left hinge to the display back cover.
3. Align the screw hole on the right hinge with the screw hole on the display back cover.
4. Replace the screw (M2.5×3.5) that secures the right hinge to the display back cover.

Next steps

1. Install the display panel.
2. Install the display bezel.
3. Install the display assembly.
4. Install the WLAN card.
5. Install the 4G WWAN card or 5G WWAN card, as applicable.
6. Install the base cover.
7. Install the SIM card.
8. Follow the procedure in After working inside your computer.

Display back cover

Removing the display back cover
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.
7. Remove the display bezel.
8. Remove the display panel.

About this task
The following images indicate the location of the display back cover and provide a visual representation of the removal procedure.

Steps
After performing the steps in the pre-requisites, we are left with the display back cover.

Installing the display back cover
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display back cover and provide a visual representation of the installation procedure.

Steps
Place the display back cover on a flat surface.

Next steps

1. Install the display panel.
2. Install the display bezel.
3. Install the display assembly.
4. Install the WLAN card.
5. Install the 4G WWAN card or 5G WWAN card, as applicable.
6. Install the base cover.
7. Install the SIM card.
8. Follow the procedure in After working inside your computer.

Display cable

Removing the display cable
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.
7. Remove the display bezel.
8. Remove the display panel.

About this task
The following images indicate the location of the display cable and provide a visual representation of the removal procedure.

Steps

1. Peel the tape that secures the display cable to the display back cover.
2. Disconnect the display cable from the camera module.
3. Peel the display cable to release it from adhesive and lift the display cable off the display back cover.

Installing the display cable
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the display cable and provide a visual representation of the installation procedure.

Steps

1. Connect the display cable to the connector on the camera.
2. Adhere the display cable to the display back cover.
3. Adhere the tape that secures the display cable to the display back cover.

Next steps

1. Install the display panel.
2. Install the display bezel.
3. Install the display assembly.
4. Install the WLAN card.
5. Install the 4G WWAN card or 5G WWAN card, as applicable.
6. Install the base cover.
7. Install the SIM card.
8. Follow the procedure in After working inside your computer.

Sensor board

Removing the sensor board
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the 4G WWAN card or 5G WWAN card, as applicable.
5. Remove the WLAN card.
6. Remove the display assembly.
7. Remove the display bezel.
8. Remove the display panel.

About this task
The following images indicate the location of the sensor board and provide a visual representation of the removal procedure. Steps

1. Remove the sensor-board cable from the routing guides on the display back cover.
2. Lift the sensor board, along with its cable, off the display back cover.

Installing the sensor board
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the sensor board and provide a visual representation of the installation procedure.

Steps

1. Place the sensor board on its slot on the display back cover.
2. Route the sensor-board cable through the routing guides on the display back cover.

Next steps

1. Install the display panel.
2. Install the display bezel.
3. Install the display assembly.
4. Install the WLAN card.
5. Install the 4G WWAN card or 5G WWAN card, as applicable.
6. Install the base cover.
7. Install the SIM card.
8. Follow the procedure in After working inside your computer.

Smart Card Reader

Removing the smart-card reader
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card.
3. Remove the base cover.
4. Remove the battery.
5. Remove the assembly-inner frame.

About this task
The following image(s) indicate the location of the smart-card reader and provides a visual representation of the removal procedure.

Steps

1. Lift the latch and disconnect the smart-card reader cable from the connector on the USH board.
2. Remove the two screws (M2x2) that secure the smart-card reader to the palm-rest assembly.
3. Lift the smart-card reader, along with its cable, off the palm-rest assembly.

Installing the smart-card reader
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the smart card reader and provide a visual representation of the installation procedure.

Steps

1. Align and place the smart-card reader on its slot on the palm-rest assembly.
2. Replace the two screws (M2x2) that adheres the smart-card reader to the palm-rest assembly.
3. Connect the smart-card cable to the connector on the USH board and close the latch.

Next steps

1. Install the assembly inner frame.
2. Install the battery.
3. Install the base cover.
4. Install the SIM card.
5. Follow the procedure in After working inside your computer.

Dummy SIM-card slot filler

Removing the dummy SIM-card slot filler

Prerequisites

1. Follow the procedure in Before working inside your computer.

2. Remove the SIM card.

3. Remove the base cover.

4. Remove the 4G WWAN card or 5G WWAN card, as applicable.

5. Remove the WLAN card.

6. Remove the memory modules.

7. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as applicable.

8. Remove the M.2 2230 solid-state drive from Slot 2, if applicable.

9. Remove the battery.

10. Remove the assembly-inner frame.

11. Remove the system board.
    NOTE: The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink

12. Remove the display assembly.

13. Remove the smart-card reader.

About this task
NOTE: For models shipped with WLAN card only, the dummy SIM-card slot filler is a separate service part and is not included with replacement palm rest. As a result, the dummy SIM-card slot filler must be removed and then reinstalled when replacing the palm-rest assembly.
The following image indicates the dummy SIM-card slot filler and provides a visual representation of the dummy SIM-card slot filler removal procedure.

Steps

1. Using a scribe, push the dummy SIM-card slot filler from the top side of the palm-rest assembly.
2. Gently lift the dummy SIM-card slot filler out of the palm-rest assembly.

Installing the dummy SIM-card slot filler

Prerequisites
If you are replacing a component, remove the necessary component before the installation procedure.

About this task
The following image indicates the location of the dummy SIM-card slot filler and provides a visual representation of the dummy SIM-card slot filler installation procedure.

Steps

1. Place the dummy SIM-card slot filler into its compartment on the palm rest.
   NOTE: Ensure that the dummy SIM-card slot filler is aligned with the ribs on the palm-rest assembly.

2. Press the dummy SIM-card slot filler until it clicks into place and ensure it fits securely into the SIM card slot.

Next steps

1. Install the smart card reader.
2. Install the display assembly.
3. Install the system board.
4. Install the assembly inner frame.
5. Install the battery.
6. Install the heat sink.
7. Install the M.2 2230 solid-state drive in Slot 2, if applicable.
8. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1, as applicable.
9. Install the memory modules.
10. Install the WLAN card.
11. Install the 4G WWAN card or 5G WWAN card, as applicable.
12. Install the base cover.
13. Install the SIM card.
14. Follow the procedure in After working inside your computer.

Palm-rest assembly

Removing the palm-rest assembly
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites

1. Follow the procedure in Before working inside your computer.

2. Remove the SIM card.

3. Remove the base cover.

4. Remove the 4G WWAN card or 5G WWAN card, as applicable.

5. Remove the WLAN card.

6. Remove the memory modules.

7. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as applicable.

8. Remove the M.2 2230 solid-state drive from Slot 2, if applicable.

9. Remove the battery.

10. Remove the assembly-inner frame.

11. Remove the system board.
    NOTE: The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink.

12. Remove the display assembly.

13. Remove the smart-card reader, if applicable.

About this task
  NOTE: When replacing the palmrest assembly, transfer the dummy SIM filler to the new palmrest assembly.The following images indicate the location of the palm- rest assembly and provide a visual representation of the removal procedure.

Steps
After performing the steps in the pre-requisites, we are left with the palm- rest assembly.

Installing the palm-rest assembly
CAUTION: The information in this section is intended for authorized service technicians only.

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.

About this task
The following images indicate the location of the palm-rest assembly and provide a visual representation of the installation procedure.

Steps
Place the palm-rest assembly on a flat surface.

Next steps

1. Install the smart card reader, if applicable.
2. Install the display assembly.
3. Install the system board.
4. Install the assembly inner frame.
5. Install the battery.
6. Install the heat sink.
7. Install the M.2 2230 solid-state drive in Slot 2, if applicable.
8. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1, as applicable.
9. Install the memory modules.
10. Install the WLAN card.
11. Install the 4G WWAN card or 5G WWAN card, as applicable.
12. Install the base cover.
13. Install the SIM card.
14. Follow the procedure in After working inside your computer.

Software

This chapter details the supported operating systems along with instructions on how to install the drivers.

Operating system
Your Precision 3581 supports the following operating systems:

• Windows 11 Home, 64-bit, Windows 10 downgrade capable
• Windows 11 Pro, 64-bit
• Windows 10 China G-SKU, 64-bit
• Ubuntu 22.04 LTS, 64-bit

Drivers and downloads
When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Base article, Drivers and Downloads FAQs 000123347.

Technology and components

NOTE: Instructions provided in this section are applicable on computers shipped with Windows operating system. Windows is factory-installed with this computer.

BIOS Setup

CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup. Certain changes can make your computer work incorrectly.
NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed.
NOTE: Before you change the settings in BIOS Setup, it is recommended that you note down the original settings for future reference.

Use BIOS Setup for the following purposes:

• Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive.
• Change the system configuration information.
• Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling base devices.

Entering BIOS setup program

About this task
Turn on (or restart) your computer and press F2 immediately.

Navigation keys
NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system.

Table 36. Navigation keys

link in the field.
Spacebar| Expands or collapses a drop-down list, if applicable.
Tab| Moves to the next focus area.
NOTE: For the standard graphics browser only.
Esc| Moves to the previous page until you view the main screen.
Pressing Esc in the main screen displays a message that prompts you to save any unsaved changes and restarts the system.

One time boot menu
To enter one time boot menu, turn on your computer, and then press F2 immediately.
NOTE: It is recommended to shutdown the computer if it is on.

The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu optionare:

• Removable Drive (if available)
  STXXXX Drive (if available)
  NOTE: XXX denotes the SATA drive number.

• Optical Drive (if available)

• SATA Hard Drive (if available)

• Diagnostics
  NOTE: Choosing Diagnostics, will display the ePSA diagnostics screen.

The boot sequence screen also displays the option to access the System Setup screen.

F12 One Time Boot menu
To enter the One Time Boot menu, turn on your computer, and then press F12 immediately.
NOTE: It is recommended to shutdown the computer if it is on.

The F12 One Time Boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are:

• Removable Drive (if available)

• STXXXX Drive (if available)
  NOTE: XXX denotes the SATA drive number.

• Optical Drive (if available)

• SATA Hard Drive (if available)

• Diagnostics

The boot sequence screen also displays the option to access System Setup.

System setup options
NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear.
Table 37. System setup options—System information menu

Overview

Latitude 5540
BIOS Version
Service Tag
Asset Tag
Manufacture Date
Ownership Date
Express Service Code
Ownership Tag
Signed Firmware Update| Displays the BIOS version number.
Displays the Service Tag of the computer.
Displays the Asset Tag of the computer.
Displays the manufacture date of the computer.
Displays the ownership date of the computer.
Displays the express service code of the computer.
Displays the Ownership Tag of the computer.
Displays whether the Signed Firmware Update is enabled on your computer.
Battery Information
Primary
Battery Level
Battery State
Health
AC Adapter
Battery Life Type| Displays that battery is primary.
Displays the battery level of the computer.
Displays the battery state of the computer.
Displays the battery health of the computer.
Displays whether the AC adapter is connected or not.
Displays the battery life type options such as Standard, Long Life Cycle 1.0,
Long Life Cycle 2.0
Processor Information
Processor Type
Maximum Clock Speed
Minimum Clock Speed
Current Clock Speed
Core Count Processor ID
Processor L2 Cache
Processor L3 Cache
Microcode Version
Intel Hyper-Threading Capable
64-Bit Technology| Displays the processor type.
Displays the maximum processor clock speed.
Displays the minimum processor clock speed.
Displays the current processor clock speed.
Displays the number of cores on the processor.
Displays the processor identification code.
Displays the processor L2 Cache size.
Displays the processor L3 Cache size.
Displays the microcode version.
Displays whether the processor is Hyper-Threading (HT) capable.
Displays whether 64-bit technology is used.
Memory Information
Memory Installed
Memory Available
Memory Speed
Memory Channel Mode
Memory Technology
DIMM_SLOT B
DIMM_SLOT A| Displays the total computer memory installed.
Displays the total computer memory available.
Displays the memory speed.
Displays single or dual channel mode.
Displays the technology used for the memory.
Displays the DIMM B memory size.
Displays the DIMM A memory size.
Devices Information
Panel Type
Video Controller
Video Memory
Wi-Fi Device
Native Resolution
Video BIOS Version
Audio Controller
Bluetooth Device
LOM MAC Address
Pass Through MAC Address
Cellular Device
dGPU Video Controller| Displays the Panel Type of the computer.
Displays the video controller type of the computer.
Displays the video memory information of the computer.
Displays the wireless device information of the computer.
Displays the native resolution of the computer.
Displays the video BIOS version of the computer.
Displays the audio controller information of the computer.
Displays the Bluetooth device information of the computer.
Displays the LAN On Motherboard (LOM) MAC address of the computer.
Displays the pass through MAC address of the computer.
Displays the M.2 PCIe SSD information of the computer.
Displays the name of the discrete video controller.

Table 38. System setup options—Boot Configuration menu

Boot Configuration

Boot Sequence
Boot Mode: UEFI only
Boot Sequence
Enable Secure Digital (SD) Card Boot| Displays the boot mode of this computer.
Enables to set the boot order.
Enable or disable the SD card read-only boot.
Default: Disabled
Secure Boot
Enable Secure Boot
Enable Microsoft UEFI CA
Secure Boot Mode| Enables secure boot using only validated boot software.
Default: ON
Enables Microsoft UEFI CA.
Default: ON
Changes to the Secure Boot operation mode. Allows to switch between
Deployed Mode and Audit Mode.
Default: Deployed Mode
Expert Key Management
Enable Custom Mode
Custom Mode Key Management| Allows the PK, KEK, db, and dbx security key databases to be modified.
Default: OFF
Allows for selection of key database.

Table 39. System setup options—Integrated Devices menu

Boot Configuration

Boot Mode: UEFI only| Displays the boot mode of this computer.
Boot Sequence| Enables to set the boot order.
Enable Secure Digital (SD) Card Boot| Enable or disable the SD card read-only boot.
Default: Disabled
Secure Boot
Enable Secure Boot| Enables secure boot using only validated boot software.
Default: ON
Enable Microsoft UEFI CA| Enables Microsoft UEFI CA.
Default: ON
Secure Boot Mode| Changes to the Secure Boot operation mode. Allows to switch between Deployed Mode and Audit Mode.
Default: Deployed Mode
Expert Key Management
Enable Custom Mode| Allows the PK, KEK, db, and dbx security key databases to be modified.
Default: OFF
Custom Mode Key Management| Allows for selection of key database.

Table 39. System setup options—Integrated Devices menu

Integrated Devices

Date/Time| Displays the current date in MM/DD/YYYY format and current time in HH:MM:SS AM/PM format.
Camera| Enables or disable the camera.
By default, the Enable Camera option is selected
Audio
Enable Audio| Enable or disable the integrated audio controller.
By default, all the options are enabled.
Enable Microphone| Enables or disables microphone.
By default, Enable Microphone is selected.
Enable Internal Speaker| Enables or disables internal speaker.
By default, Enable Internal Speaker is selected.
USB/Thunderbolt Configuration| ● Enable or disable booting from USB mass storage devices connected to external USB ports.
By default, the Enable External USB Ports option is enabled.
● Enable or disable booting from USB mass storage devices such as external hard drive, optical drive, and USB drive.
By default, the Enable USB Boot Support option is enabled.
Enable Thunderbolt Technology Support| Enable or disable the associated ports and adapters.
By default, the Enable Thunderbolt Technology Support option is selected.
Enable Thunderbolt Boot Support| Enable or disable the Thunderbolt adapter peripheral device and USB devices connected to the Thunderbolt adapter to be used during BIOS Pre-boot.By default, the Enable Thunderbolt Boot Support option is disabled.
Enable Thunderbolt
(and PCIe behind TBT) pre-boot modules| Enable or disable the PCIe devices that are connected through a Thunderbolt adapter to execute the PCIe devices UEFI Option ROM (if present) during pre-boot.
By default, the Enable Thunderbolt (and PCIe behind TBT) pre-boot modules option is disabled.
Disable USB4 PCIE Tunneling| Disable the USB4 PCIE Tunneling option.
By default, the option is disabled.
Video/Power only on Type-C Ports| Enable or disable the Type-C port functionality to video or only power.
By default, the Video/Power only on Type-C Ports option is disabled.
Type-C Dock Override| Enables to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock override is enabled, the Video/Audio/Lan submenu is activated.
By default, the Type-C Dock Override option is enabled.
Video| Enable or disable the usage of video on Dell Dock external ports.
By default, the Video option is disabled.
Audio| Enable or disable the usage of audio on Dell Dock external ports.
By default, the Audio option is enabled.
Miscellaneous Devices| Enable or disable Fingerprint Reader device.
By default, the Enable Fingerprint Reader Device option is enabled.
Unobtrusive Mode
Enable Unobtrusive Mode| Enable or disable all the computer light and sound.
By default, the Enable Unobtrusive Mode option is not enabled.

Table 40. System setup options—Storage menu

Storage

SATA Operation
SATA Operation| Set the operating mode of the integrated storage device controller. By default, the RAID On option is enabled.
Storage Interface
SATA Operation| Enable or disable the onboard drives on the computer. The following options is available (ON by default):
● M.2 PCIe SSD-1
● M.2 PCIe SSD-2
SMART Reporting
Enable SMART Reporting| Enable or disable Self-Monitoring, Analysis, and Reporting Technology (SMART) during computer startup.
By default, the Enable SMART Reporting option is not enabled.
Drive Information| Displays the drive type and device name.
Enable MediaCard
Secure Digital (SD) Card| Enable or disable the SD card.
By default, the Secure Digital (SD) Card option is enabled.
Secure Digital (SD) Card Read-Only Mode| Enable or disable the SD card read- only mode.
By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled.

Table 41. System setup options—Display menu

Display

Display Brightness
Brightness on battery power| Enable to set screen brightness when the computer is running on battery power.
Brightness on AC power| Enable to set screen brightness when the computer is running on AC power.
Full Screen Logo| Enable or disable full screen logo.
By default, the option is not enabled.
Touchscreen| Enable or disable the touchscreen for the operating system.
By default, the option is enabled.

Table 42. System setup options—Connection menu

Connection

Network Controller Configuration
Integrated NIC
Enable UEFI Network Stack| Controls the on-board LAN controller.
By default, the Enabled with PXE option is enabled.
Enable or disable UEFI Network Stack.
By default, the Enable UEFI Network Stack and Enabled w/PXE option are enabled.
Wireless Device Enable
WWAN/GPS
WLAN
Bluetooth
Contactless smartcard/NFC| Enable or disable the internal WWAN/GPS device By default, the option is enabled.
Enable or disable the internal WLAN device By default, the option is enabled.
Enable or disable the internal Bluetooth device By default, the option is enabled.
Enable or disable the internal Contactless smartcard/NFC device By default, the option is enabled.
Enable UEFI Network Stack| Enable or disable UEFI Network Stack and controls the on-board LAN Controller.
By default, the Enable UEFI Network Stack option are enabled.
Wireless Radio Control
Control WLAN radio| Sense the connection of the computer to a wired network and subsequently disable the selected wireless radios (WLAN).
Control WWAN radio| By default, the option is disabled.
Sense the connection of the computer to a wired network and subsequently disable the selected wireless radios (WWAN).
By default, the option is disabled.
HTTPs Boot Feature
HTTPs Boot
HTTPs Boot Mode
Boot URL
Boot Certificate| Enable or disable the HTTPs Boot feature.
By default, the HTTPs Boot option is enabled.
With Auto Mode, the HTTPs Boot extracts Boot URL from the DHCP. With Manual Mode, the HTTPs Boot reads Boot URL from the user-provided data.
By default, the Auto Mode option is enabled.
Displays the Boot URL
The default value is NULL.
Displays the Boot certificate The default value is NULL.

Table 43. System setup options—Power menu

Power

Battery configuration| Enables the computer to run on battery during peak power usage hours. Use the table Custom Charge Start and Custom Charge Stop, to prevent AC power usage between certain times of each day.
By default, the Adaptive option is enabled.
Advanced Configuration
Enable Advanced Battery Charge
Configuration| Enable or disable the advanced battery charge configuration.
By default, the Enable Advanced Battery Charge Configuration option is disabled.
Peak Shift| Enables the computer to run on battery during peak power usage hours.
By default, the Enable Peak Shift option is enabled.
Enable Peak Shift
Type-C Connector Power USB PowerShare
Enable USB PowerShare| Enables you to select the applicable wattage.
Enable or disable the USB PowerShare.
By default, the Enable USB PowerShare option is disabled
Thermal Management| Enables to cool the fan and processor heat management to adjust the computer performance, noise, and temperature.
By default, the Optimized option is enabled.
USB Wake Support
Wake on Dell USB-C Dock| When enabled, connecting a Dell USB-C Dock will wake the computer from standby.
By default, the Wake on Dell USB-C Dock option is enabled.
Block Sleep| Enables to block entering sleep (S3) mode in the operating system.
By default, the Block Sleep option is disabled.
Lid Switch| Enable or disable the lid switch.
By default, the Lid Switch option is enabled.
Intel Speed Shift Technology| Enable or disable the Intel speed shift technology support.
By default, the Intel Speed Shift Technology option is enabled.

Table 44. System setup options—Security menu

Security

TPM 2.0 Security
TPM 2.0 Security On| Enable or disable TPM 2.0 security options.
By default, the TPM 2.0 Security On option is enabled.
Attestation Enable| Enables to control whether the Trusted Platform Module (TPM) Endorsement Hierarchy is available to the operating system.
By default, the Attestation Enable option is enabled.
Key Storage Enable| Enables to control whether the Trusted Platform Module (TPM) Storage Hierarchy is available to the operating system.
By default, the Key Storage Enable option is enabled.
SHA-256| BIOS and the TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot.
By default, the SHA-256 option is enabled.
Clear| Enables to clear the TPM owner information and returns the TPM to the default state.
By default, the Clear option is disabled.
PPI ByPass for Clear Commands| Controls the TPM Physical Presence Interface (PPI).
By default, the PPI ByPass for clear Commands option is disabled.
Intel Total Memory Encryption
Total Memory Encryption| Enable or disable you to protect memory from physical attacks including freeze spray, probing DDR to read the cycles, and others.
By default, the Total Memory Encryption option is disabled.
Chassis intrusion| Controls the chassis intrusion feature.
By default, the On-Silent option is enabled.
SMM Security Mitigation| Enable or disable SMM Security Mitigation.
By default, the option is enabled.
Data Wipe on Next Boot
Start Data Wipe
Absolute
UEFI Boot Path Security| Enable or disable the data wipe on next boot.
By default, the option is enabled.
Enable or disable or permanently disable the BIOS module interface of the optional Absolute Persistence Module service from Absolute software.
By default, the option is enabled.
Controls whether or not the computer will prompt the user to enter the admin password (if set) when booting to a UEFI boot device from the F12 boot menu.
By default, the Always Except Internal HDD option is enabled.
Authenticated BIOS Interface
Enable Authenticated BIOS Interface Clear Certificate Store Firmware Device Tamper Detection
Clear Firmware Device Tamper Detection| By default, this option is disabled.
By default, this option is disabled.
Enables you to control the firmware device tamper detection feature. This feature notifies the user when the firmware device is tampered. When enabled, a screen warning messages are displayed on the computer and a tamper detection event is logged in the BIOS Events log. The computer fails to reboot until the event is cleared.
By default, the Firmware Device Tamper Detection option is set to Silent.
For additional security, Dell Technologies recommends keeping the Firmware Device Tamper Detection option enabled.
By default, this option is disabled.

Table 45. System setup options—Passwords menu

Passwords

Admin Password
System Password
M.2 PCIe SSD-1
M.2 PCIe SSD-2| Set, change, or delete the administrator password.
Set, change, or delete the computer password.
Set, change, or delete the SSD-1 password.
Set, change, or delete the SSD-2 password.
Password Configuration
Upper Case Letter
Lower Case Letter
Digit
Special Character
Minimum Characters
Password Bypass| Reinforces password must have at least one upper case letter.
By default, the option is disabled.
Reinforces password must have at least one lower case letter.
By default, the option is disabled.
Reinforces password must have at least one digit.
By default, the option is disabled.
Reinforces password must have at least one special character.
By default, the option is disabled.
Set the minimum characters allowed for password.
When enabled, this always prompts for computer and internal hard drive passwords when powered on from the off state.
By default, the Disabled option is enabled.
Password Changes
Enable Non-Admin Password Changes| Enable or disable to change computer and hard drive password without the need for admin password.
By default, the option is enabled.
Admin Setup Lockout
Enable Admin Setup Lockout| Enables administrators control over how their users can or cannot access BIOS setup.
By default, the option is disabled.
Master Password Lockout
Enable Master Password Lockout| When enabled, this will disable the master password support.
By default, the option is disabled.
Allow Non-Admin PSID Revert
Enable Allow Non-Admin PSID Revert| Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt.
By default, the option is disabled.

Table 46. System setup options—Update, Recovery menu

Update, Recovery

UEFI Capsule Firmware Updates
BIOS Recovery from Hard Drive | Enable or disable BIOS updates through UEFI capsule update packages.
By default, the option is enabled.
Enables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key.
By default, the option is enabled.
BIOS Downgrade
Allow BIOS Downgrade| Enable or disable the flashing of the computer firmware to previous revision is blocked.
By default, the option is enabled.
SupportAssist OS Recovery| Enable or disable the boot flow for SupportAssist OS Recovery tool in the event of certain computer errors.
By default, the option is enabled.
BISOConnect| Enable or disable cloud Service OS recovery if the main operating system fails to boot with the number of failures equal to or greater than the value specified by the Auto OS Recovery Threshold setup option and local Service OS does not boot or is not installed. By default, the option is enabled.
Dell Auto OS Recovery Threshold| Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool.
By default, the threshold value is set to 2.

Table 47. System setup options—System Management menu

System Management

Service Tag
Asset Tag| Display the Service Tag of the computer.
Create a computer Asset Tag.
AC Behavior
Wake on AC| Enable or disable the wake on AC option.
By default, the option is disabled.
Wake on LAN
Wake on LAN| Enable or disable the computer to power on by special LAN signals when it receives a wakeup signal from the WLAN.
By default, the Disabled option is selected.
Auto on Time| Enable to set the computer to turn on automatically every day or on a preselected date and time. This option can be configured only if the Auto On Time is set to Everyday, Weekdays, or Selected Days.
By default, the option is disabled.
Intel AMT Capability
Enable Intel AMT Capability| Enable or disable Intel AMT capability.
By default, this option is set to Restrict Preboot Access.
First Power On Date
Set Ownership Date| Enables to set the ownership date.
By default, this option is disabled.
Diagnostics
OS Agent Requests| Enables or disables scheduling of onboard diagnostics on the subsequent boot.
By default, this option is enabled.
Power-on-Self-Test Automatic Recovery| Enables or disables automatic recovery if the computer is unresponsive after the BIOS Power-on-Self Test.
By default, this option is enabled.

Table 48. System setup options—Keyboard menu

Keyboard

Numlock Enable| Enable or disable the Numlock function when the computer boots.
By default, the option is enabled.
Fn Lock Options| By default, the Fn lock option is enabled.
Keyboard Illumination| Enables to change the keyboard illumination settings.
By default, the Bright option is enabled.
Keyboard Backlight Timeout on AC| Set the timeout value for the keyboard backlight when an AC adapter is connected to the computer.
By default, the 10 seconds option is enabled.
Keyboard Backlight Timeout on Battery
| Set the timeout value for the keyboard backlight when the is running only on battery power.
By default, the 10 seconds option is enabled.
Device Configuration Hotkey Access| Manages whether you can access device configuration screens through hotkeys during computer startup.
By default, the option is enabled.

Table 49. System setup options—Pre-boot Behavior menu

Pre-boot Behavior

Adapter Warnings
Enable Adapter Warnings| Enable or disable the warning messages during boot when the adapters with less power capacity are detected.
By default, the option is enabled.
Warning and Errors| Enable or disable the action to be done when a warning or error is encountered.
By default, the Prompt on Warnings and Errors option is enabled.
Fastboot| Enable to set the speed of the boot process.
By default, the Minimal option is enabled.
Extend BIOS POST Time| Set the BIOS POST time.
By default, the 0 seconds option is enabled.
MAC Address Pass-Through| Replaces the external NIC MAC address with the selected MAC address from the computer.
By default, the System Unique MAC Address option is enabled.
Sign of Life
Early Keyboard Backlight| By default, the option is enabled.

Table 50. System setup options—Virtualization menu

Virtualization

Intel Virtualization Technology
Enable Intel Virtualization Technology (VT)
VT for Direct I/O| When enabled, the system can run a Virtual Machine Monitor (VMM).
Default: ON
Enable Intel VT for Direct I/O| When enabled, the system can perform Virtualization Technology for Direct I/O (VT-d).
Default: ON
DMA Protection
Enable Pre-Boot DMA Support
Enable OS Kernel DMA Support| This setting controls Pre-boot DMA protection for both internal and external orts.
Default: ON
This setting controls Kernel DMA protection for both internal and external ports.
Default: ON

Table 51. System setup options—Performance menu

Performance

Multi Core Support
Active Cores| Enables to change the number of CPU cores available to the operating system.
By default, the All Cores options is enabled.
Intel SpeedStep
Enable Intel SpeedStep Technology| Enables the computer to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production.
By default, the option is enabled.
C-States Control
Enable C-State Control| Enable or disable additional processor sleep states.
By default, the option is enabled.
Intel TurbocBoost Technology
Enable Intel Turbo Boost Technology| Enable or disable Intel TurboBoost mode of the processor.
By default, the option is enabled.
Intel Hyper-Threading Technology
Enable Intel Hyper-Threading Technology| Enable or disable Hyper-Threading in the processor.
By default, the option is enabled.

Table 52. System setup options—System Logs menu

System Logs

BIOS Event Log
Clear Bios Event Log| Display BIOS events.
By default, the Keep option is enabled.
Thermal Event Log
Clear Thermal Event Log| Display Thermal events.
By default, the Keep option is enabled.
Power Event Log
Clear Power Event Log| Display power events.
By default, the Keep option is enabled.

Updating the BIOS
Updating the BIOS in Windows

About this task
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the computer it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, search in the Knowledge Base Resource at www.dell.com/support.

Steps

1. Go to www.dell.com/support.

2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search.
   NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually browse for your computer model.

3. Click Drivers & Downloads. Expand Find drivers.

4. Select the operating system installed on your computer.

5. In the Category drop-down list, select BIOS.

6. Select the latest version of BIOS, and click Download to download the BIOS file for your computer.

7. After the download is complete, browse the folder where you saved the BIOS update file.

8. Double-click the BIOS update file icon and follow the on-screen instructions.
   For more information, search in the Knowledge Base Resource at www.dell.com/support.

Updating the BIOS in Linux and Ubuntu
To update the system BIOS on a computer that is installed with Linux or Ubuntu, see the knowledge base article 000131486 at www.dell.com/support.

Updating the BIOS using the USB drive in Windows
About this task
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, search in the Knowledge Base Resource at www.dell.com/support.

Steps

1. Follow the procedure from step 1 to step 6 in Updating the BIOS in Windows to download the latest BIOS setup program file.

2. Create a bootable USB drive. For more information, search in the Knowledge Base Resource at www.dell.com/support.

3. Copy the BIOS setup program file to the bootable USB drive.

4. Connect the bootable USB drive to the computer that needs the BIOS update.

5. Restart the computer and press F12 .

6. Select the USB drive from the One Time Boot Menu.

7. Type the BIOS setup program filename and press Enter.
   The BIOS Update Utility appears.

8. Follow the on-screen instructions to complete the BIOS update.

Updating the BIOS from the F12 One-Time boot menu
Update your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive and booting from the F12 One-Time boot menu.

About this task
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the computer it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the computer will ask for this on each  reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, search in the Knowledge Base Resource at www.dell.com/support.

BIOS Update
You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12 One-Time boot menu on the computer.
Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.
NOTE: Only computers with BIOS Flash Update option in the F12 One-Time boot menu can use this function.

Updating from the One-Time boot menu
To update your BIOS from the F12 One-Time boot menu, you need the following:

• USB drive formatted to the FAT32 file system (key does not have to be bootable)
• BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive
• AC power adapter that is connected to the computer
• Functional computer battery to flash the BIOS

Perform the following steps to perform the BIOS update flash process from the F12 menu:
CAUTION: Do not turn off the computer during the BIOS update process. The computer may not boot if you turn off your computer.

Steps

1. From a turn off state, insert the USB drive where you copied the flash into a USB port of the computer.

2. Turn on the computer and press F12 to access the One-Time Boot Menu, select BIOS Update using the mouse or arrow keys then press Enter.
   The flash BIOS menu is displayed.

3. Click Flash from file.

4. Select external USB device.

5. Select the file and double-click the flash target file, and then click Submit.

6. Click Update BIOS. The computer restarts to flash the BIOS.

7. The computer will restart after the BIOS update is completed.

System and setup password
Table 53. System and setup password

BIOS settings of your computer.

You can create a system password and a setup password to secure your computer.
CAUTION: The password features provide a basic level of security for the data on your computer.
CAUTION: Anyone can access the data that is stored on your computer if it is not locked and left unattended.
NOTE: System and setup password feature is disabled.

Assigning a System Setup password

Prerequisites
You can assign a new System or Admin Password only when the status is in Not Set.

About this task
To enter BIOS System Setup, press F2 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select Security and press Enter.
   The Security screen is visible.

2. Select System/Admin Password and create a password in the Enter the new password field.
   Use the following guidelines to assign the system password:
   ● A password can have up to 32 characters.
   ● At least one special character: ! ” # $ % & ‘ ( ) * + , – . / : ; < = > ? @ [ \ ] ^ _ ` { | }
   ● Numbers 0 through 9.
   ● Upper case letters from A to Z.
   ● Lower case letters from a to z.

3. Type the system password that you entered earlier in the Confirm new password field and click OK.

4. Press Esc and save the changes as prompted by the pop-up message.

5. Press Y to save the changes.
   The computer restarts.

Deleting or changing an existing system setup password

Prerequisites
Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing System and/or Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is Locked.

About this task
To enter the System Setup, press F12 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select System Security and press Enter.
   The System Security screen is displayed.

2. In the System Security screen, verify that Password Status is Unlocked.

3. Select System Password, update, or delete the existing system password, and press Enter or Tab.

4. Select Setup Password, update, or delete the existing setup password, and press Enter or Tab.
   NOTE: If you change the System and/or Setup password, reenter the new password when prompted. If you delete the System and/or Setup password, confirm the deletion when prompted.

5. Press Esc and a message prompts you to save the changes.

6. Press Y to save the changes and exit from System Setup.
   The computer restarts.

Clearing CMOS settings
About this task
CAUTION: Clearing CMOS settings will reset the BIOS settings on your computer.

Steps

1. Remove the base cover.
2. Disconnect the battery cable from the system board.
3. Remove the coin-cell battery.
4. Wait for one minute.
5. Replace the coin-cell battery.
6. Connect the battery cable to the system board.
7. Replace the base cover.

Clearing BIOS (System Setup) and System passwords

About this task
To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell.
NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

Troubleshooting

Handling swollen rechargeable Li-ion batteries
Like most laptops, Dell laptops use Lithium-ion batteries. One type of Lithium-ion battery is the rechargeable Li-ion battery. Rechargeable Li-ion batteries have increased in popularity in recent years and have become standard in the electronics industry due to customer preferences for a slim form factor (especially with newer ultra-thin laptops) and long battery life. Inherent to rechargeable Li-ion battery technology is the potential for swelling of the battery cells. Swollen battery may impact the performance of the laptop. To prevent possible further damage to the device enclosure or internal components leading to malfunction, discontinue the use of the laptop and discharge it by disconnecting the AC adapter and letting the battery drain.
Swollen batteries should not be used and should be replaced and disposed of properly. We recommend contacting Dell product support for options to replace a swollen battery under the terms of the applicable warranty or service contract, including options for replacement by a Dell authorized service technician.
The guidelines for handling and replacing rechargeable Li-ion batteries are as follows:

• Exercise caution when handling rechargeable Li-ion batteries.

• Discharge the battery before removing it from the system. To discharge the battery, unplug the AC adapter from the system and operate the system only on battery power.
  When the system will no longer power on when the power button is pressed, the battery is fully discharged.

• Do not crush, drop, mutilate, or penetrate the battery with foreign objects.

• Do not expose the battery to high temperatures, or disassemble battery packs and cells.

• Do not apply pressure to the surface of the battery.

• Do not bend the battery.

• Do not use tools of any type to pry on or against the battery.

• If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a battery can be dangerous.

• Do not attempt to reassemble a damaged or swollen battery into a laptop.

• Swollen batteries that are covered under warranty should be returned to Dell in an approved shipping container (provided by Dell)—this is to comply with transportation regulations. Swollen batteries that are not covered under warranty should be disposed of at an approved recycling center. Contact Dell product support at https://www.dell.com/support for assistance and further instructions.

• Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer. Always purchase genuine batteries from https://www.dell.com or otherwise directly from Dell.

Rechargeable Li-ion batteries can swell for various reasons such as age, number of charge cycles, or exposure to high heat.
For more information on how to improve the performance and lifespan of the laptop battery and to minimize the possibility of occurrence of the issue, search Dell Laptop Battery in the Knowledge Base Resource at www.dell.com/support.

Locate the Service Tag or Express Service Code of your Dell computer
Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your Dell computer, we recommend entering the Service Tag or Express Service Code at www.dell.com/support.
For more information on how to find the Service Tag for your computer, see Locate the Service Tag on your computer.

Dell SupportAssist Pre-boot System Performance Check diagnostics

About this task
SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to:

• Run tests automatically or in an interactive mode
• Repeat tests
• Display or save test results
• Run thorough tests to introduce additional test options to provide extra information about the failed device(s)
• View status messages that inform you if tests are completed successfully
• View error messages that inform you of problems encountered during testing
  NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminal when the diagnostic tests are performed.

For more information, see the knowledge base article 000180971.

Running the SupportAssist Pre-Boot System Performance Check

Steps

1. Turn on your computer.

2. As the computer boots, press the F12 key as the Dell logo appears.

3. On the boot menu screen, select the Diagnostics option.

4. Click the arrow at the bottom left corner.
   Diagnostics front page is displayed.

5. Click the arrow in the lower-right corner to go to the page listing.
   The items detected are listed.

6. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.

7. Select the device from the left pane and click Run Tests.

8. If there are any issues, error codes are displayed.
   Note the error code and validation number and contact Dell.

Built-in self-test (BIST)
M-BIST
M-BIST (Built In Self-Test) is the system board’s built-in self-test diagnostics tool that improves the diagnostics accuracy of system board embedded controller (EC) failures.
NOTE: M-BIST can be manually initiated before POST (Power On Self Test).

How to run M-BIST
NOTE: M-BIST must be initiated on the system from a power-off state either connected to AC power or with battery only.

1. Press and hold both the M key on the keyboard and the power button to initiate M-BIST.

2. With both the M key and the power button held down, the battery indicator LED may exhibit two states:
   a. OFF: No fault detected with the system board
   b. AMBER: Indicates a problem with the system board

3. If there is a failure with the system board, the battery status LED will flash one of the following error codes for 30 seconds:
   Table 54. LED error codes**** Blinking Pattern| Possible Problem
   ---|---
   Amber| White
   2| 1| CPU Failure
   2| 2| LCD Power Rail Failure
   1| 3| TPM Detection Failure
   2| 4| Memory/RAM failure

4. If there is no failure with the system board, the LCD will cycle through the solid color screens described in the LCD-BIST section for 30 seconds and then power off.

LCD Power rail test (L-BIST)
L-BIST is an enhancement to the single LED error code diagnostics and is automatically initiated during POST. L-BIST will check the LCD power rail. If there is no power being supplied to the LCD (that is if the L-BIST circuit fails), the battery status LED will flash either an error code [2,8] or an error code [2,7].
NOTE: If L-BIST fails, LCD-BIST cannot function as no power will be supplied to the LCD.

How to invoke L-BIST Test:

1. Press the power button to start the system.

2. If the system does not start up normally, look at the battery status LED:
   ● If the battery status LED flashes an error code [2,7], the display cable may not be connected properly.
   ● If the battery status LED flashes an error code [2,8], there is a failure on the LCD power rail of the system board, hence there is no power supplied to the LCD.

3. For cases, when a [2,7] error code is shown, check to see if the display cable is properly connected.

4. For cases when a [2,8] error code is shown, replace the system board.

LCD Built-in Self Test (BIST)
Dell laptops have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and PC settings.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade etc., it is always a good practice to isolate the LCD (screen) by running the Built- In Self Test (BIST).

How to invoke LCD BIST Test

1. Power off the Dell laptop.
2. Disconnect any peripherals that are connected to the laptop. Connect only the AC adapter (charger) to the laptop.
3. Ensure that the LCD (screen) is clean (no dust particles on the surface of the screen).
4. Press and hold D key and Power on the laptop to enter LCD built-in self test (BIST) mode. Continue to hold the D key, until the system boots up.
5. The screen will display solid colors and change colors on the entire screen to white, black, red, green, and blue twice.
6. Then it will display the colors white, black and red.
7. Carefully inspect the screen for abnormalities (any lines, fuzzy color or distortion on the screen).
8. At the end of the last solid color (red), the system will shut down.
   NOTE: Dell SupportAssist Pre-boot diagnostics upon launch, initiates an LCD BIST first, expecting a user intervention confirm functionality of the LCD.

System-diagnostic lights
This section lists the system-diagnostic lights of your Precision 3581.
Table 55. System-diagnostic lights

power source (AC, battery, coin cell) and
drain flea power by pressing and holding down power button for 3~5 seconds.
2| 1| CPU failure| ● Run the Dell Support Assist/Dell Diagnostics tool.
● If problem persists, replace the system board.
2| 2| System board failure (included BIOS corruption or ROM error)| ● Flash latest BIOS version
● If problem persists, replace the system board.
2| 3| No memory/RAM detected| ● Confirm that the memory module is installed properly.
● If problem persists, replace the memory module.
2| 4| Memory/RAM failure| ● Reset and swap memory modules among the slots.
● If problem persists, replace the memory module.
2| 5| Invalid memory installed| ● Reset and swap memory modules among the slots.
● If problem persists, replace the memory module.
2| 6| System board/Chipset Error| Replace the system board.
2| 7| LCD failure (SBIOS message)| Replace the LCD module.
2| 8| LCD failure (EC detection of power rail failure)| Replace the system board.
3| 1| CMOS battery failure| ● Reset the main battery connection.
● If problem persists, replace the main battery.
3| 2| PCI or Video card/chip failure| Replace the system board.
3| 3| BIOS Recovery image not found| ● Flash latest BIOS version
● If problem persists, replace the system board.
3| 4| BIOS Recovery image found but invalid| ● Flash latest BIOS version
● If problem persists, replace the system board.
3| 5| Power rail failure| Replace the system board.
3| 6| Flash corruption detected by SBIOS.| ● Press power button for over 25 seconds to do RTC reset. If problem persists, replace the system board.
● Disconnect all power source (AC, battery, coin cell) and drain flea power by pressing and holding down power button 3~5 seconds to ensure all power are drained.
● Run “BIOS recovery from USB”, and the instructions are in the website Dell support.
● If problem persists, replace the system board.
3| 7| Timeout waiting on ME to reply to HECI message.| Replace the system board.

NOTE: Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Nums-Lock), Power button LED (without Fingerprint reader), and Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance Check diagnostics.

Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows operating system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User’s Guide at www.dell.com/serviceabilitytools. Click SupportAssist and then, click SupportAssist OS Recovery.

Real-Time Clock (RTC Reset)
The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell systems from No POST/No Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models.
Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for thirty (30) seconds. The system RTC Reset occurs after you release the power button.

Backup media and recovery options
It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup Media and Recovery Options.

Wi-Fi power cycle
About this task
If your computer is unable to access the Internet due to Wi-Fi connectivity issues a Wi-Fi power cycle procedure may be performed. The following procedure provides the instructions on how to conduct a Wi-Fi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.

Steps

1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.

Drain residual flea power (perform hard reset)

About this task
Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is removed.
For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea power before removing or replacing any components in your computer.
Draining residual flea power, also known as a performing a “hard reset”, is also a common troubleshooting step if your computer does not power on or boot into the operating system.

To drain residual flea power (perform a hard reset)

Steps

1. Turn off your computer.
2. Disconnect the power adapter from your computer.
3. Remove the base cover.
4. Remove the battery.
5. Press and hold the power button for 20 seconds to drain the flea power.
6. Install the battery.
7. Install the base cover.
8. Connect the power adapter to your computer.
9. Turn on your computer.
   NOTE: For more information about performing a hard reset, search in the Knowledge Base Resource at www.dell.com/support.

Getting help and contacting Dell

Self-help resources
You can get information and help on Dell products and services using these self-help resources:
Table 56. Self-help resources

www.dell.com
Tips|
Contact Support| In Windows search, type Contact Support, and press Enter.
Online help for operating system| www.dell.com/support/windows
www.dell.com/support/linux
Access top solutions, diagnostics, drivers and downloads, and learn more about your computer through videos, manuals and documents.| Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your Dell computer, enter the Service Tag or Express Service Code at www.dell.com/support.
For more information on how to find the Service Tag for your computer, see Locate the Service Tag on your computer.
Dell knowledge base articles for a variety of computer concerns| 1.Go to www.dell.com/support.
2.On the menu bar at the top of the Support page, select Support > Knowledge Base.
3.In the Search field on the Knowledge Base page, type the keyword, topic, or model number, and then click or tap the search icon to view the related articles.

Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.
NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog.

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