Lenovo neo 50s Gen 4 User Guide

: June 16, 2024
: Lenovo

Table of Contents

neo 50s Gen 4
Product Information
Specifications:
- Product Usage Instructions
Chapter 1. Meet your computer
Chapter 2. Get started with your computer
Chapter 3. Explore your computer
Chapter 4. Secure your computer and information
Chapter 5. UEFI BIOS
Chapter 6. Trou

neo 50s Gen 4

Product Information

Specifications:

Model: neo 50s Gen 4
Operating System: Ubuntu Desktop
USB Specifications: USB 2.0 and USB 3.0

Product Usage Instructions

Chapter 1. Meet your computer

Front:

The front of the computer contains various ports and
buttons.

Refer to the user manual for detailed information on the front
panel.

Rear:

The rear of the computer also contains ports and connectors.

Refer to the user manual for detailed information on the rear
panel.

USB Specifications:

The computer supports USB 2.0 and USB 3.0 ports.

Refer to the user manual for detailed information on the USB
specifications.

Chapter 2. Get started with your computer

Get started with Ubuntu Desktop:

Follow the instructions provided in the user manual to set up
and start using Ubuntu Desktop.

Access networks:

Learn how to connect your computer to different networks, such
as wired Ethernet and Wi-Fi.

Refer to the user manual for detailed instructions on accessing
networks.

Connect to the wired Ethernet:

Connect your computer to a wired Ethernet network for internet
access.

Refer to the user manual for step-by-step instructions on
connecting to a wired Ethernet network.

Connect to Wi-Fi networks (for selected models):

If your computer supports Wi-Fi, learn how to connect to Wi-Fi
networks.

Refer to the user manual for detailed instructions on
connecting to Wi-Fi networks.

Connect an external display:

Learn how to connect an external display to your computer.

Refer to the user manual for step-by-step instructions on
connecting an external display.

Manage cables with a smart cable clip:

Use the smart cable clip to organize and manage cables connected
to your computer.

Refer to the user manual for instructions on using the smart
cable clip.

Chapter 3. Explore your computer

Set the power plan:

Configure the power plan settings on your computer.

Refer to the user manual for instructions on setting the power
plan.

Transfer data:

Learn how to transfer data to and from your computer.

Refer to the user manual for detailed instructions on
transferring data.

Connect to a Bluetooth-enabled device (for selected

models):

If your computer supports Bluetooth, learn how to connect to
Bluetooth-enabled devices.

Refer to the user manual for instructions on connecting to
Bluetooth-enabled devices.

Use the optical drive (for selected models):

If your computer has an optical drive, learn how to use it.

Refer to the user manual for instructions on using the optical
drive.

Use a media card (for selected models):

If your computer has a media card slot, learn how to use it.

Refer to the user manual for instructions on using a media
card.

Purchase accessories:

Find out about the accessories available for your computer and
how to purchase them.

Refer to the user manual for information on purchasing
accessories.

Chapter 4. Secure your computer and information

Lock the computer:

Secure your computer by locking it.

Refer to the user manual for instructions on locking the
computer.

UEFI BIOS passwords:

Learn how to set UEFI BIOS passwords for added security.

Refer to the user manual for instructions on setting UEFI BIOS
passwords.

Computrace Agent software embedded in firmware (for selected

models):

Find out about the Computrace Agent software embedded in
firmware and its security features.

Refer to the user manual for detailed information on the
Computrace Agent software.

Use BIOS security solutions:

Learn how to use BIOS security solutions to protect your
computer and information.

Refer to the user manual for instructions on using BIOS
security solutions.

Wipe the storage drive data:

Erase all data on the storage drive for security purposes.

Refer to the user manual for instructions on wiping the storage
drive data.

Cover presence switch:

Understand the cover presence switch and its role in securing
your computer.

Refer to the user manual for information on using the cover
presence switch.

Intel BIOS guard:

Learn about Intel BIOS guard and how it enhances your computer’s
security.

Refer to the user manual for detailed information on Intel BIOS
guard.

Smart USB Protection:

Discover the Smart USB Protection feature and how it safeguards
your computer against USB threats.

Refer to the user manual for information on using Smart USB
Protection.

Chapter 5. UEFI BIOS

What is UEFI BIOS:

Learn about UEFI BIOS and its functions.

Refer to the user manual for detailed information on UEFI
BIOS.

Access the BIOS menu on your computer.

Refer to the user manual for instructions on entering the BIOS
menu.

Navigate in the BIOS interface:

Learn how to navigate and use the BIOS interface.

Refer to the user manual for instructions on navigating in the
BIOS interface.

Change the display language of UEFI BIOS:

Customize the display language of UEFI BIOS.

Refer to the user manual for instructions on changing the
display language of UEFI BIOS.

Set the system date and time:

Configure the system date and time in UEFI BIOS.

Refer to the user manual for instructions on setting the system
date and time.

Change the boot priority order:

Modify the boot priority order in UEFI BIOS.

Refer to the user manual for instructions on changing the boot
priority order.

Enable or disable the configuration change detection

feature:

Activate or deactivate the configuration change detection
feature in UEFI BIOS.

Refer to the user manual for instructions on enabling or
disabling the configuration change detection feature.

Enable or disable the automatic power-on feature:

Turn on or off the automatic power-on feature in UEFI BIOS.

Refer to the user manual for instructions on enabling or
disabling the automatic power-on feature.

Enable or disable the smart power-on feature (for selected

models):

If available, enable or disable the smart power-on feature in
UEFI BIOS.

Refer to the user manual for instructions on enabling or
disabling the smart power-on feature.

Enable or disable the ErP LPS compliance mode:

Activate or deactivate the ErP LPS compliance mode in UEFI
BIOS.

Refer to the user manual for instructions on enabling or
disabling the ErP LPS compliance mode.

Change the ITS performance mode:

Adjust the ITS performance mode in UEFI BIOS.

Refer to the user manual for instructions on changing the ITS
performance mode.

Change BIOS settings before installing a new operating

system:

Modify BIOS settings before installing a new operating system on
your computer.

Refer to the user manual for instructions on changing BIOS
settings before installing a new operating system.

Update UEFI BIOS:

Learn how to update the UEFI BIOS on your computer.

Refer to the user manual for instructions on updating UEFI
BIOS.

Recover from a BIOS update failure:

Recover your computer from a failed BIOS update.

Refer to the user manual for instructions on recovering from a
BIOS update failure.

Clear CMOS:

Reset the CMOS settings on your computer.

Refer to the user manual for instructions on clearing
CMOS.

Chapter 6. Trou

neo 50s Gen 4 User Guide

Read this first Before using this documentation and the product it supports, ensure that you read and understand the following: · Safety and Warranty Guide · Generic Safety and Compliance Notices · Setup Guide
First Edition (November 2023) © Copyright Lenovo 2023. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS35F-05925.

Contents
Discover your Lenovo computer . . . .iii
Chapter 1. Meet your computer . . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1 Rear . . . . . . . . . . . . . . . . . . . . 3 USB specifications . . . . . . . . . . . . . . 4
Chapter 2. Get started with your computer . . . . . . . . . . . . . . . . . 5
Get started with Ubuntu Desktop . . . . . . . . . 5 Access networks . . . . . . . . . . . . . . . 5
Connect to the wired Ethernet . . . . . . . . 5 Connect to Wi-Fi networks (for selected models) . . . . . . . . . . . . . . . . . 6 Connect an external display . . . . . . . . . . . 6 Manage cables with a smart cable clip . . . . . . . 6
Chapter 3. Explore your computer . . . 7
Set the power plan . . . . . . . . . . . . . . 7 Transfer data . . . . . . . . . . . . . . . . . 7
Connect to a Bluetooth-enabled device (for selected models) . . . . . . . . . . . . . 7 Use the optical drive (for selected models) . . . 8 Use a media card (for selected models) . . . . . 8 Purchase accessories . . . . . . . . . . . . . 8
Chapter 4. Secure your computer and information . . . . . . . . . . . . . 9
Lock the computer . . . . . . . . . . . . . . 9 UEFI BIOS passwords . . . . . . . . . . . . 10 Computrace Agent software embedded in firmware (for selected models) . . . . . . . . . 11 Use BIOS security solutions . . . . . . . . . . 11
Wipe the storage drive data . . . . . . . . 11 Cover presence switch . . . . . . . . . . 11 Intel BIOS guard . . . . . . . . . . . . . 12 Smart USB Protection . . . . . . . . . . 12
Chapter 5. UEFI BIOS . . . . . . . . . 13
What is UEFI BIOS. . . . . . . . . . . . . . 13 Enter the BIOS menu. . . . . . . . . . . . . 13 Navigate in the BIOS interface . . . . . . . . . 13 Change the display language of UEFI BIOS . . . . 13 Set the system date and time . . . . . . . . . 14 Change the boot priority order . . . . . . . . . 14 Enable or disable the configuration change detection feature . . . . . . . . . . . . . . 14 Enable or disable the automatic power-on feature . . . . . . . . . . . . . . . . . . 15
© Copyright Lenovo 2023

Enable or disable the smart power-on feature (for selected models) . . . . . . . . . . . . . . 15 Enable or disable the ErP LPS compliance mode . . 15 Change the ITS performance mode . . . . . . . 16 Change BIOS settings before installing a new operating system . . . . . . . . . . . . . . 16 Update UEFI BIOS. . . . . . . . . . . . . . 16 Recover from a BIOS update failure . . . . . . . 17 Clear CMOS . . . . . . . . . . . . . . . . 17
Chapter 6. Troubleshooting, diagnostics, and recovery . . . . . . . 19
Basic procedure for resolving computer problems . . . . . . . . . . . . . . . . . 19 Troubleshooting . . . . . . . . . . . . . . 19
Startup problems . . . . . . . . . . . . 19 Audio problems . . . . . . . . . . . . . 20 Network problems . . . . . . . . . . . . 20 Performance problems . . . . . . . . . . 21 Storage drive problems . . . . . . . . . . 21 CD or DVD problems . . . . . . . . . . . 22 Serial connector problems . . . . . . . . . 23 USB device problems . . . . . . . . . . 23 Software problems . . . . . . . . . . . . 23 Lenovo diagnostic tools . . . . . . . . . . . 23
Chapter 7. CRU replacement . . . . . 25
CRU list . . . . . . . . . . . . . . . . . . 25 Remove or replace a CRU . . . . . . . . . . . 26
Vertical stand . . . . . . . . . . . . . . 26 Computer cover . . . . . . . . . . . . . 26 Front bezel . . . . . . . . . . . . . . . 27 Hard disk drive . . . . . . . . . . . . . 28 Optical drive . . . . . . . . . . . . . . 32 Memory module . . . . . . . . . . . . . 34 M.2 solid-state drive . . . . . . . . . . . 35 Coin-cell battery . . . . . . . . . . . . . 36 Heat-sink-and-fan assembly . . . . . . . . 37 PCI-Express connector cable . . . . . . . 39 PCI-Express card . . . . . . . . . . . . 39 Power supply assembly . . . . . . . . . . 40
Chapter 8. Help and support . . . . . 43
Self-help resources . . . . . . . . . . . . . 43 Call Lenovo . . . . . . . . . . . . . . . . 44
Before you contact Lenovo . . . . . . . . 44 Lenovo Customer Support Center . . . . . . 44 Purchase additional services. . . . . . . . . . 45
i

Appendix A. Supplemental information about the Ubuntu operating system . . . . . . . . . . . . . . . . . 47

Appendix B. Compliance information . . . . . . . . . . . . . . . 49
Appendix C. Notices and trademarks . . . . . . . . . . . . . . . 51

ii neo 50s Gen 4 User Guide

Discover your Lenovo computer
Thank you for choosing a Lenovo computer! We are dedicated to delivering the best solution to you.
Before starting your tour, please read the following information: · Illustrations in this documentation might look different from your product. · Depending on the model, some optional accessories, features, software programs, and user interface
instructions might not be applicable to your computer. · Documentation content is subject to change without notice. To get the latest documentation, go to https://
pcsupport.lenovo.com.

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iv neo 50s Gen 4 User Guide

Chapter 1. Meet your computer
Front

1. ThinkCentre® LED 3. Optical drive activity indicator 5. Storage drive activity indicator 7. Headset connector 9. USB-C® (3.2 Gen 1) connector 11. Internal speaker

2. Optical drive eject button 4. Power button with power indicator 6. Microphone connector 8. SD-card slot 10. USB 3.2 connectors Gen 1

for selected models
Power indicator Show the system status of your computer. · On: The computer is starting up or working. · Off: The computer is off or in hibernation mode. · Blinking: The computer is in sleep mode.
Related topics · “USB specifications” on page 4. · “” on page .

1

· “Use a media card (for selected models)” on page . 2 neo 50s Gen 4 User Guide

Rear

Item 1. 3.
5.
7. 9. 11. 13. 15.

Description Audio line-out connector DisplayPortTM out connector
USB 2.0 connectors
USB 3.2 connector Gen 1 Power cord connector Security-lock slot Ethernet connector Serial connector*

Item 2. 4.
6.
8. 10. 12. 14.

Description HDMITM out connector VGA-out connector USB 3.2 connector Gen 1 (with smart poweron feature) PCI-Express card area Padlock loop
Serial connector Smart cable clip slots

for selected models
Serial connector Connect an external modem, a serial printer, or other devices that use a serial connector.
Related topics · “Lock the computer” on page 9. · “” on page . · “USB specifications” on page 4. · “” on page .

Chapter 1. Meet your computer 3

USB specifications
Note: Depending on the model, some USB connectors might not be available on your computer.

Connector name

Description

·

USB 2.0 connector

·

USB 3.2 connector Gen 1

Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB storage device, or USB printer.

· Charge USB-C compatible devices with the output voltage and current of 5 V and 3 A.
· Connect to USB-C accessories to help expand your computer functionality. To purchase USB-C accessories, go to https://www.lenovo.com/accessories.

·

USB-C (3.2 Gen 1) connector

Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file attributes, and other factors related to system configuration and operating environments, the actual transfer rate using the various USB connectors on this device will vary and will be slower than the data rate listed below for each corresponding device.

USB device 3.2 Gen 1 / 3.1 Gen 1 3.2 Gen 2 / 3.1 Gen 2 3.2 Gen 2 × 2 Thunderbolt 3 Thunderbolt 4

Data rate (Gbit/s) 5 10 20 40 40

4 neo 50s Gen 4 User Guide

Chapter 2. Get started with your computer
Get started with Ubuntu Desktop
Learn the basics of Ubuntu and start working with it right away. For more information about Ubuntu, see the Ubuntu documentation site at: https://help.ubuntu.com/lts/ubuntu-help/index.html.
The Gnome desktop is installed by default and is designed to be simple and easy to use. Details on using Gnome are available by launching the Help application or online at https://help.gnome.org/users/.

Launch an app · Press the Super key (with the Windows logo) or open the Activities menu on the top left and type in the
name of the application you want to launch. · Click the Show Applications button on the lower left, and select the application you want to launch.
Launch settings Open the system menu from the top-right corner and click Settings.
Access networks
This section helps you access networks through connecting to a wired or wireless network.
Connect to the wired Ethernet
Connect your computer to a local network through the Ethernet connector on your computer with an Ethernet cable.

5

Connect to Wi-Fi networks (for selected models)
If your computer includes a wireless LAN module, you can connect your computer to Wi-Fi®networks. 1. Open the system menu from the top-right corner and expand the Wi-Fi section of the menu. 2. Click Select Network. A list of available wireless networks is displayed. 3. Select a network available for connection. Provide required information, if needed.
Connect an external display
Connect a projector or a monitor to your computer to give presentations or expand your workspace. Change display settings Right-click a blank area on the desktop and select Display settings. Then, you can change display settings as you prefer.
Manage cables with a smart cable clip
Note: You can purchase a smart cable clip from Lenovo. To manage cables of devices (such as the keyboard and the mouse) with a smart cable clip:
1. Pull the cables through the dents in the clip. 2. Install the clip as shown.
6 neo 50s Gen 4 User Guide

Chapter 3. Explore your computer
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have been idle for a specified duration: · Turn off the display: After 5 minutes · Put the computer to sleep: After 20 minutes
To awaken the computer from Sleep mode, press any key on your keyboard.
To reset the power plan to achieve the best balance between performance and power saving: 1. Open the system menu from the top-right corner and click Settings. 2. Click Power. 3. Choose or customize a power plan of your preference.
Transfer data
Quickly share your files using the built-in Bluetooth technology among devices with the same features. You also can install a disc or media card to transfer data.
Connect to a Bluetooth-enabled device (for selected models)
You can connect all types of Bluetooth-enabled devices to your computer, such as a keyboard, a mouse, a smartphone, or speakers. Place the device that you are attempting to connect to less than 10 meters (33 feet) from the computer.

1. Turn on Bluetooth on the computer. a. Open the system menu from the top- right corner and then click Settings Bluetooth. b. In the Bluetooth section enable Bluetooth with the toggle button at the top.

7

2. Any discoverable devices will be shown in the Devices list. 3. Select a Bluetooth device, and then follow the on-screen instructions.
Use the optical drive (for selected models)
If your computer has an optical drive, read the following information. Install or remove a disc
1. With the computer on, press the eject button on the optical drive. The tray slides out of the drive. 2. Insert a disc into the tray or remove a disc from the tray, and then push the tray back into the drive. Note: If the tray does not slide out of the drive when you press the eject button, turn off the computer. Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject button. Use the emergency eject only in an emergency. Record a disc 1. Insert a recordable disc into the optical drive that supports recording. 2. In the Blank CD/DVD-R Disc notification that pops up at the bottom of the screen, select Open with
CD/DVD Creator. 3. Follow the on-screen instructions.
Use a media card (for selected models)
If your computer has an SD-card slot, read the following information. Install a media card
1. Locate the SD-card slot. 2. Ensure that the metal contacts on the card are facing the ones in the SD-card slot. Insert the card firmly
into the SD-card slot until it is secured in place. Remove a media card Attention: Before removing a media card, unmount the card from the operating system first. Otherwise, data on the card might get corrupted or lost.
1. Launch the Files application. 2. Select the unmount icon next to the card and unmount the card from the operating system. 3. Press the card and remove it from your computer. Store the card safely for future use.
Purchase accessories
Lenovo has a number of hardware accessories and upgrades to help expand the capabilities of your computer. Options include memory modules, storage devices, network cards, power adapters, keyboards, mice, and more. To shop at Lenovo, go to https://www.lenovo.com/accessories.
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Chapter 4. Secure your computer and information
Lock the computer
Note: Lenovo makes no comments, judgments, or warranties about the function, quality, or performance of the locking device and security feature. You can purchase computer locks from Lenovo. Padlock Locking the computer cover through a padlock prevents unauthorized access to the inside of your computer.
Kensington-style cable lock Lock your computer to a desk, table, or other fixtures through a Kensington-style cable lock.

9

UEFI BIOS passwords
You can set passwords in UEFI (Unified Extensible Firmware Interface) BIOS (Basic Input/Output System) to strengthen the security of your computer.
Password types You can set a power-on password, supervisor password, system management password, or hard disk password in UEFI BIOS to prevent unauthorized access to your computer. However, you are not prompted to enter any UEFI BIOS password when your computer resumes from sleep mode.
· Power-on password When a power-on password is set, you are prompted to enter a valid password each time the computer is turned on.
· Supervisor password Setting a supervisor password deters unauthorized users from changing configuration settings. If you are responsible for maintaining the configuration settings of several computers, you might want to set a supervisor password. When a supervisor password is set, you are prompted to enter a valid password each time you try to enter the BIOS menu. If both the power-on password and supervisor password are set, you can enter either password. However, you must use your supervisor password to change any configuration settings.
· Hard disk password Setting a hard disk password prevents unauthorized access to the data on the storage drive. When a hard disk password is set, you are prompted to enter a valid password each time you try to access the storage drive.
Note: After you set a hard disk password, your data on the storage drive is protected even if the storage drive is removed from one computer and installed in another. · System management password (for selected models) You can enable the system management password to have the same authority as the supervisor password to control security related features. To customize the authority of the system management password through the UEFI BIOS menu:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security System Management Password Access Control. 3. Follow the on-screen instructions. If you have set both the supervisor password and the system management password, the supervisor password overrides the system management password.
Set, change, and remove a password Before you start, print these instructions.
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security. 3. Depending on the password type, select Set Supervisor Password, Set Power-On Password, Set
System Management Password, or Hard Disk Password and press Enter. 4. Follow the on-screen instructions to set, change, or remove a password. 5. Press F10 or Fn+F10 to save the changes and exit.
10 neo 50s Gen 4 User Guide

You should record your passwords and store them in a safe place. If you forget the passwords, contact a Lenovo-authorized service provider to have the passwords removed.
Note: If the hard disk password is forgotten, Lenovo cannot remove the password or recover data from the storage drive.
Computrace Agent software embedded in firmware (for selected models)
The Computrace Agent software is an IT asset management and computer theft recovery solution. The software detects if changes have been made on the computer, such as hardware, software, or the computer call-in location. You might have to purchase a subscription to activate the Computrace Agent software.
Use BIOS security solutions
This section provides BIOS solutions to secure your computer and information.
Wipe the storage drive data
It is recommended that you wipe the storage drive data before recycling the storage drive or the computer.
To wipe the storage drive data: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security secure wipe Enabled. 3. Press F10 or Fn+F10 to save the changes and exit. 4. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12. 5. Select App Menu secure wipe and press Enter. 6. Select the storage drive you will wipe and click NEXT. 7. Select the entire storage drive or partition to wipe as desired. 8. Select the method as desired and click NEXT. 9. Click Yes to confirm your option when the prompting window is displayed.
10. If you have set a hard disk password for the storage drive, enter the password. Otherwise, set a temporary password following the on-screen instructions. Then, click NEXT. The wiping process begins.
Note: Duration of the wiping process varies depending on the storage drive capacity. 11. Click Reboot when you are prompted to reset the system, and then one of the following will happen:
· If the system storage drive data is wiped, you will be prompted that no operating system is found. · If the non-system storage drive data is wiped, the computer restarts automatically.
Cover presence switch
The cover presence switch prevents the computer from logging in to the operating system when the computer cover is not properly installed or closed.
To enable the cover presence switch connector on the system board: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security Cover Tamper Detected and press Enter. 3. Select Enabled and press Enter. 4. Press F10 or Fn+F10 to save the changes and exit.
Chapter 4. Secure your computer and information 11

If the cover presence switch is enabled and the computer cover is not correctly installed or closed, an error message will be displayed when you turn on the computer. To bypass the error message and log in to the operating system:
1. Properly install or close the computer cover. 2. Enter the BIOS menu, save and then exit.
Intel BIOS guard
The Intel BIOS Guard module cryptographically verifies all BIOS updates. This hardware-based security helps prevent software and malware attacks on the computers BIOS.
Smart USB Protection
The Smart USB Protection function is a security function that helps prevent data from being copied from the computer to USB storage devices connected to the computer. You can set the Smart USB Protection function to one of the following modes: · Disabled (default setting): You can use the USB storage devices without limitation. · Read Only: You cannot copy data from the computer to the USB storage devices. However, you can
access or modify data on the USB storage devices. · No Access: You cannot access the USB storage devices from the computer. To configure the Smart USB Protection function:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security Smart USB Protection and press Enter. 3. Select the desired setting and press Enter. 4. Press F10 or Fn+F10 to save the changes and exit.
12 neo 50s Gen 4 User Guide

Chapter 5. UEFI BIOS
This chapter provides information about configuring and updating UEFI BIOS, and clearing CMOS.

What is UEFI BIOS
Note: The operating system settings might override any similar settings in UEFI BIOS.
UEFI BIOS is the first program that the computer runs when the computer is turned on. UEFI BIOS initializes the hardware components and loads the operating system and other programs. Your computer comes with a setup program with which you can change UEFI BIOS settings.

Enter the BIOS menu
Restart the computer. When the logo screen is displayed, press F1 or Fn+F1 to enter the BIOS menu.
Note: If you have set BIOS passwords, enter the correct passwords when prompted. You also can select No or press Esc to skip the password prompt and enter the BIOS menu. However, you cannot change the system configurations that are protected by passwords.

Navigate in the BIOS interface
Attention: The default configurations are already optimized for you in boldface. Improper change of the configurations might cause unexpected results.
Depending on your keyboard, you can navigate in the BIOS interface by pressing the following keys, or combinations of Fn and the following keys:

Key F1 or Fn+F1 Esc or Fn+Esc or Fn+ or Fn+ +/ or Fn++/ Enter F9 or Fn+F9 F10 or Fn+F10

Function General Help Exit the submenu Locate an item Move keyboard focus Change value Enter the submenu Setup Defaults Save and exit

Change the display language of UEFI BIOS
UEFI BIOS supports three or four display languages: English, French, simplified Chinese, and Russian (for selected models).
To change the display language of UEFI BIOS: 1. Select Main Language and press Enter. 2. Set the display language as desired.

13

Set the system date and time
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Main System Time & Date and press Enter. 3. Set the system date and time as desired. 4. Press F10 or Fn+F10 to save the changes and exit.
Change the boot priority order
If the computer does not boot from a device as expected, you can change the boot priority order permanently or select a temporary boot device.
Change the boot priority order permanently 1. Depending on the type of the storage device, do one of the following: · If the storage device is internal, go to step 2. · If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert the disc into the optical drive. · If the storage device is an external device other than a disc, connect the storage device to the computer. 2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 3. Select Startup Boot Priority Order, and then follow the on-screen instructions to change the boot priority order. 4. You can also select the first priority device group by selecting Startup First Boot Device, and then follow the on-screen instructions to select the first boot device within this group. Your computer will boot from the first boot device before trying the boot priority order you set in the previous step. 5. Press F10 or Fn+F10 to save the changes and exit.
Select a temporary boot device Note: Not all discs and storage drives are bootable.
1. Depending on the type of the storage device, do one of the following: · If the storage device is internal, go to step 2. · If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert the disc into the optical drive. · If the storage device is an external device other than a disc, connect the storage device to the computer.
2. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12. 3. Select the storage device as desired and press Enter.
If you want to change the boot priority order permanently, select Enter Setup on Startup Device Menu and press Enter to enter the BIOS menu.
Enable or disable the configuration change detection feature
If you enable configuration change detection, when the POST detects configuration changes of some hardware devices (such as storage drives or memory modules), an error message will be displayed when you turn on the computer.
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To enable or disable the configuration change detection feature: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Security Configuration Change Detection and press Enter. 3. Enable or disable the feature as desired. 4. Press F10 or Fn+F10 to save the changes and exit.
To bypass the error message and log in to the operating system, press F2 or Fn+F2. To clear the error message, enter the BIOS menu, save and then exit.
Enable or disable the automatic power-on feature
The Automatic Power On item in UEFI BIOS provides various options for you to make your computer start up automatically.
To enable or disable the automatic power-on feature: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Power Automatic Power On and press Enter. 3. Select the feature as desired and press Enter. 4. Enable or disable the feature as desired. 5. Press F10 or Fn+F10 to save the changes and exit.
Enable or disable the smart power-on feature (for selected models)
Ensure that the keyboard is connected to a USB connector supporting the smart power-on feature. With the smart power-on feature enabled, you can start up or wake up the computer from the hibernation mode by pressing Alt+P.
To enable or disable the smart power-on feature: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Power Smart Power On and press Enter. 3. Enable or disable the feature as desired. 4. Press F10 or Fn+F10 to save the changes and exit.
Enable or disable the ErP LPS compliance mode
Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go to: https://www.lenovo.com/us/en/compliance/eco- declaration
You can enable the ErP LPS compliance mode to reduce the consumption of electricity when the computer is off or in sleep mode.
To enable or disable the ErP LPS compliance mode: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Power Enhanced Power Saving Mode and press Enter. 3. Depending on whether you select Enabled or Disabled, do one of the following: · If you select Enabled, press Enter. Then, select Power Automatic Power On and press Enter. Check whether the Wake on LAN feature is disabled automatically. If no, disable it.
Chapter 5. UEFI BIOS 15

· If you select Disabled, press Enter. Then, go to the next step. 4. Press F10 or Fn+F10 to save the changes and exit.
When the ErP LPS compliance mode is enabled, you can wake up the computer by doing one of the following: · Press the power button. · Enable the Wake Up on Alarm feature to make the computer wake up at a set time.
Change the ITS performance mode
You can adjust the acoustic and thermal performance of your computer by changing the ITS performance mode. Three options are available: · Balance mode: The computer works at the balance mode with balanced noise and better performance. · Performance mode (default setting): The computer works at the best performance with normal acoustic
level.
Note: The term “best” only refers to the best effect among different settings of the product itself. · Full Speed: All fans in the computer will run at full speed.
To change the ITS performance mode: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. Select Power Intelligent Cooling and press Enter. 3. Select Performance Mode and press Enter. 4. Set the performance mode as desired. 5. Press F10 or Fn+F10 to save the changes and exit.
Change BIOS settings before installing a new operating system
BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system.
To change the BIOS settings: 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1. 2. From the main interface, select Security Secure Boot and press Enter. 3. Depending on the operating system to be installed, do one of the following: · To install the Windows 10 (64-bit) and most of Linux operating system, select Enabled for Secure Boot. · To install an operating system that does not support secure boot, select Disabled for Secure Boot. 4. Press F10 or Fn+F10 to save the changes and exit.
Update UEFI BIOS
When you install a new program, device driver, or hardware component, you might need to update UEFI BIOS. You can update the BIOS from your operating system or a flash update disc (supported only on selected models).
Download and install the latest UEFI BIOS update package by one of the following methods: · Using the built-in software update service:
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Ubuntu software update will check the LVFS site for any firmware updates and notify you when updates are available. · From the Lenovo Support Web site:
1. Go to https://pcsupport.lenovo.com. 2. Download the flash BIOS update driver for the operating system version or the ISO image version
(used to create a flash update disc). Then, download the installation instructions for the flash BIOS update driver you have downloaded. 3. Print the installation instructions and follow the instructions to update the BIOS.
Recover from a BIOS update failure
1. Remove all media from the drives and turn off all connected devices. 2. Insert the BIOS update disc into the optical drive, and then turn off the computer. 3. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the
Clear CMOS /Recovery jumper. 4. Move the jumper from the standard position to the maintenance position. 5. Reconnect the power cords for the computer and the monitor to electrical outlets. 6. Turn on the computer and the monitor. When the computer beeps, the recovery process begins. 7. After the recovery process is completed, the computer will be turned off automatically.
Note: Depending on the computer model, the recovery process will take two to three minutes. 8. Disconnect all power cords from electrical outlets. 9. Move the jumper back to the standard position. 10. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and
the monitor to electrical outlets. 11. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1. 12. To prevent data loss, ensure that BIOS settings are restored to an earlier point. For BIOS configurations,
see Chapter 5 “UEFI BIOS” on page 13.
Clear CMOS
1. Remove all media from the drives and turn off all connected devices and the computer. 2. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the
Clear CMOS /Recovery jumper. 3. Move the jumper from the standard position to the maintenance position. 4. Reconnect the power cords for the computer and the monitor to electrical outlets. 5. Turn on the computer and the monitor. When the computer beeps, wait for approximately 10 seconds. 6. Turn off the computer by holding the power button for approximately four seconds. 7. Disconnect all power cords from electrical outlets. 8. Move the jumper back to the standard position. 9. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and
the monitor to electrical outlets. 10. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1. 11. To prevent data loss, ensure that BIOS settings are restored to an earlier point. For BIOS configurations,
see Chapter 5 “UEFI BIOS” on page 13.
Chapter 5. UEFI BIOS 17

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Chapter 6. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve computer problems. Use the basic procedure as a starting point for resolving computer problems.

Basic procedure for resolving computer problems

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions. 1. Check that: a. The cables for all connected devices are connected correctly and securely. b. All components have been reassembled correctly. c. All connected devices that require ac power are connected to properly grounded and working electrical outlets. d. All connected devices are enabled in UEFI BIOS. 2. Use an antivirus program (if any) to see if the computer has been infected by a virus. If the program detects a virus, remove the virus. 3. See Chapter 6 “Troubleshooting, diagnostics, and recovery” on page 19 to resolve the problem you are experiencing, run the diagnostic program, and recover your operating system. 4. If the problem persists, contact Lenovo. See Chapter 8 “Help and support” on page 43.

Troubleshooting
Use the troubleshooting information to find solutions to problems that have definite symptoms.

Startup problems
Problem
The computer does not start up when you press the power button.

Solution
· Ensure that the power cord is correctly connected to the rear of the computer and to a working electrical outlet.
· If the computer has a secondary power switch on the rear of the computer, ensure that it is switched on.
· The power indicator on the front of the computer is on. · The computer voltage matches the voltage available at the
electrical outlet for your country or region.

The operating system does not start up from the correct storage drive or fails to start up
The computer beeps multiple times before the operating system starts up.

· Ensure that all storage drive signal cables and power cables are connected correctly.
· Ensure that the storage drive the computer starts up from is listed as the first startup device in UEFI BIOS.
· In rare cases, the storage drive with the operating system might get corrupted or damaged. In such cases, you might need to replace the storage drive.
· Optane memory currently is not supported with Linux.
Ensure that no keys are stuck.

19

Audio problems
Problem
The sound comes from one of the external speakers.

Solution
· Ensure that the speaker cable is inserted completely into the connector on the computer.
· Ensure that the cable that connects the left speaker to the right speaker is securely connected.
· Ensure that the balance settings are set correctly.

Network problems
Note: The Wi-Fi® and Bluetooth features are optional.

Problem

Solution

The computer cannot connect to an Ethernet LAN.
When a Gigabit Ethernet model computer is used at a speed of 1000 Mbps, the Ethernet LAN connection fails or errors occur. The Wake On LAN (WOL) feature does not work.

· Connect the cable from the Ethernet connector to the RJ45 connector of the hub.
· Enable the Ethernet LAN feature in UEFI BIOS. · Enable the Ethernet LAN adapter.
1. Go to Settings and select Network. 2. Ensure the Ethernet option is enabled. · Update or reinstall the Ethernet LAN driver. · Install all networking software that is necessary for your network environment. Check with your LAN administrator for the necessary networking software. · Set the same duplex for the switch port and the adapter. If you configured the adapter for full duplex, ensure that the switch port is also configured for full duplex. Setting a wrong duplex mode might degrade performance, cause data loss, or result in lost connections.
Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE-T hub/switch (not 100 BASE-X).
Enable the Wake On LAN feature in UEFI BIOS.

The Wi-Fi feature does not work.

· Enable the Wi-Fi feature in UEFI BIOS. · Enable all Wi-Fi devices.
1. Launch Settings and choose Wi-Fi. 2. Make sure that Wi-Fi is enabled by the toggle at the top. 3. Select the settings cog next to each Wi-Fi device, and make
sure that it is configured and enabled. · Update or reinstall the Wi-Fi driver.

20 neo 50s Gen 4 User Guide

Problem
The Bluetooth feature does not work.
Sound does not come from the Bluetooth headset or headphones.

Solution
· Enable the Bluetooth feature in UEFI BIOS. · Enable all Bluetooth devices.
1. Launch Settings and choose Bluetooth. 2. Make sure that Bluetooth is enabled by the toggle at the top. 3. Click on each device to enable and start pairing. · Update or reinstall the Bluetooth driver.
Select the Bluetooth headset or headphones as the default audio output device in advanced sound settings.

Performance problems
Problem The free storage drive space is insufficient.
The free memory space is insufficient.

Solution
· Clean out your Inbox, Sent Items, and Deleted Items folders from your e-mail application.
· Clean up your C drive. 1. Launch the Disk Usage Analyzer application. 2. Select the drive to analyze. 3. Use the results to track down where your space is being used and clean up appropriately.
· Launch the System Monitor application. · Use the Memory column to determine which processes are using
memory and can be ended.

Storage drive problems
Problem
Some or all storage drives are missing from the BIOS menu.

Solution
· Ensure that the signal cables and power cables for all the storage drives are connected correctly.
· Ensure that the computer is configured correctly to support the storage drives.
If the computer is installed with SATA storage drives, ensure that the SATA storage drive enablement module (one to five storage drives) is installed.
If the computer is installed with SAS storage drives, ensure that the SAS storage drive enablement module (one to five storage drives) or the LSI MegaRAID SAS adapter is installed.

Chapter 6. Troubleshooting, diagnostics, and recovery 21

CD or DVD problems

Problem

Solution

A CD or DVD does not work.
A bootable recovery medium, such as the Product Recovery CD, cannot be used to start your computer.

· Ensure that the optical drive supports the CD or DVD.
· Ensure that the disc is inserted correctly, with its label up.
· Ensure that the disc you are using is clean. To remove dust or fingerprints, wipe the disc clean with a soft cloth from the center to the outside. Wiping a disc in a circular motion might cause loss of data.
· Ensure that the power cable and signal cable are securely connected to the drive.
· Ensure that the disc you are using is not scratched or damaged. Try inserting another disc that you know works.
· If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem.
Ensure that the CD or DVD drive is set as the top priority of the boot priority order in UEFI BIOS. Note: On some computer models, the startup sequence is permanently set and cannot be changed.

A black screen is displayed instead of the DVD video.

· Restart the DVD player program. · Try a lower screen resolution or color depth. · Close any open files, and then restart the computer.

A DVD movie does not play.

· Ensure that the disc surface is clean and not scratched.
· Check the disc or packaging for regional coding. You might need to purchase a disc with coding for the region where you are using the computer.

No audio or only an intermittent audio comes out while a DVD movie is playing.

· Check the volume control settings on the computer and on your speakers.
· Ensure that the disc surface is clean and not scratched. · Check all cable connections to and from the speakers. · Use the DVD menu for the video to select a different audio track.

The playback is slow or choppy.

· Disable any background programs that are using CPU or memory resources.
· Ensure that video resolution is less than 1152 x 864 pixels.

A message indicating invalid disc or no disc found is displayed.

· Ensure that the disc is in the drive with the shiny side of the disc facing down.
· Ensure that video resolution is less than 1152 x 864 pixels.
· Ensure that the DVD or CD is inserted into an appropriate optical drive. For example, do not insert a DVD into a CD-only drive.

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Serial connector problems
Problem
The serial connector cannot be accessed.

Solution
· Connect the serial cable from the serial connector on the computer to the serial device. If the serial device has its own power cord, connect the power cord to a grounded electrical outlet.
· Turn on the serial device and keep the device online.
· Install any programs supplied with the serial device. Refer to the documentation that comes with the serial device for more information.
· If you added one serial-connector adapter, ensure that the adapter is installed correctly.

USB device problems
Problem
A USB device cannot be accessed.

Solution
· Connect the USB cable from the USB connector to the USB device. If the USB device has its own power cord, connect the power cord to a grounded electrical outlet.
· Turn on the USB device and keep the device online.
· Install any device drivers or programs supplied with the USB device. Refer to the documentation that comes with the USB device for more information.
· Disconnect and reconnect the USB connector to reset the USB device.
· Ensure that the Smart USB Protection function is disabled in UEFI BIOS.

Software problems
Problem
Some programs do not work as expected.

Solution
1. Check whether the problem is caused by a program.
a. Ensure that the software is compatible with the computer. Refer to the information supplied with the software for more information.
b. Verify that other software works correctly on the computer.
c. Verify that the software you are using works on another computer.
2. If the problem is caused by a program:
· Refer to the printed documentation that comes with the program or the help system of the program.
· Update the program.
· Uninstall the program and then reinstall it. To download a program that is preinstalled on your computer, go to https:// pcsupport.lenovo.com and follow the on-screen instructions.

Lenovo diagnostic tools
For information about Lenovo diagnostic tools, go to:

Chapter 6. Troubleshooting, diagnostics, and recovery 23

https://pcsupport.lenovo.com/lenovodiagnosticsolutions 24 neo 50s Gen 4 User Guide

Chapter 7. CRU replacement
Customer Replaceable Units (CRUs) are parts that can be replaced by the customer. Lenovo computers contain the following types of CRUs: · Self-service CRUs: Refer to parts that can be replaced easily by customer themselves or by trained
service technicians at an additional cost. · Optional-service CRUs: Refer to parts that can be replaced by customers with a greater skill level.
Trained service technicians can also provide service to replace the parts under the type of warranty designated for the customer’s machine.
If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You might be required to return the defective part that is replaced by the CRU. When return is required: (1) return instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of your receipt of the replacement CRU. For full details, see the Lenovo Limited Warranty documentation at: https://www.lenovo.com/warranty/llw_02
CRU list
The following is the CRU list of your computer.
Self-service CRUs · Computer cover · Front bezel · Hard disk drive · Keyboard · Memory module · Mouse · Optical drive · Optical drive bracket · Power cord · Smart cable clip · Vertical stand
Optional-service CRUs · Coin-cell battery · Heat-sink-and-fan assembly · PCI Express card · Power supply assembly · M.2 solid-state drive*

for selected models

25

Remove or replace a CRU
This section provides instructions on how to remove or replace a CRU.
Vertical stand
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. 2. Disconnect all power cords from electrical outlets and disconnect all cables from the computer. Removal step
Computer cover
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following:
1. Turn off the computer and remove all connected devices and cables. 2. Disconnect all power cords from electrical outlets and disconnect all cables from the computer.
26 neo 50s Gen 4 User Guide

3. Unlock any locking device that secures the computer cover. 4. Remove the vertical stand if any. See “Vertical Stand” on page 26. Removal steps
Front bezel
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the computer cover. See “Computer cover” on page 26. Replacement procedure
Chapter 7. CRU replacement 27

Hard disk drive
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: · Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for
frequent changes or replacement. · Before replacing the internal storage drive, make a backup copy of all the data that you want to keep. · Do not touch the contact edge of the internal storage drive. Otherwise, the internal storage drive might get
damaged. · Do not apply pressure to the internal storage drive. · Do not make the internal storage drive subject to physical shocks or vibration. Put the internal storage
drive on a soft material, such as cloth, to absorb physical shocks. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26.. 2. Remove the front bezel. See “Front bezel” on page 27. 3. Disconnect the signal cable and the power cable from the hard disk drive.
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Replacement procedure of the 2.5-inch hard disk drive and bracket Chapter 7. CRU replacement 29

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Replacement procedure of the 3.5-inch hard disk drive and bracket Chapter 7. CRU replacement 31

Optical drive
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26. 2. Remove the front bezel. See “Front bezel” on page 27. 3. Remove the hard disk drive, if any. See “Hard disk drive” on page 28. 4. Disconnect the signal cable and power cable from the optical drive.
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Replacement procedure Chapter 7. CRU replacement 33

Memory module
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Ensure that you follow the installation order for memory modules shown in the following illustration.
For access, do the following: 1. Remove the computer cover. See “Computer cover” on page 26. 2. Remove the front bezel. See “Front bezel” on page 27. 3. Remove the hard disk drive, if any. See “Hard disk drive” on page 28.
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4. Remove the optical drive, if any. See “Optical drive” on page 32. Replacement procedure
M.2 solid-state drive
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: · Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for
frequent changes or replacement. · Before replacing the internal storage drive, make a backup copy of all the data that you want to keep. · Do not touch the contact edge of the internal storage drive. Otherwise, the internal storage drive might get
damaged. · Do not apply pressure to the internal storage drive. · Do not make the internal storage drive subject to physical shocks or vibration. Put the internal storage
drive on a soft material, such as cloth, to absorb physical shocks. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26. 2. Remove the front bezel. See “Front bezel” on page 27.
Chapter 7. CRU replacement 35

3. Remove the hard disk drive, if any. See “Hard disk drive” on page 28. 4. Remove the optical drive, if any. See “Optical drive” on page 32. Removal steps Remove the M.2 solid-state drive depending on the computer model: · Type 1
· Type 2
Note: Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive.
Coin-cell battery
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel connector assignments (configurations). A coin-cell battery keeps this information active when you turn off the computer. 36 neo 50s Gen 4 User Guide

The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell battery lasts forever. If the coin-cell battery fails, the date and time information is lost. An error message is displayed when you turn on the computer. To dispose of the coin-cell battery, refer to the “Lithium coin-cell battery notice” in the Safety and Warranty Guide. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26. 2. Remove the front bezel. See “Front bezel” on page 27. 3. Remove the hard disk drive, if any. See “Hard disk drive” on page 28. 4. Remove the optical drive, if any. See “Optical drive” on page 32. Removal steps
Note: After installing a new coin-cell battery, reset the system date and time in the UEFI BIOS menu.
Heat-sink-and-fan assembly
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
The heat-sink-and-fan assembly might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following:
1. remove the computer cover. See “Computer cover” on page 26. 2. Disconnect the microprocessor fan cable from the system board. Replacement procedure 1. Follow the following sequence to loosen the four screws that secure the heat- sink-and-fan assembly to
the system board. Then, lift the heat-sink-and-fan assembly off the system board.
Chapter 7. CRU replacement 37

· Partially loosen screw 1a , fully loosen screw 1b , and then fully loosen screw 1a . · Partially loosen screw 1c , fully loosen screw 1d , and then fully loosen screw 1c . Notes: · Carefully loosen the four screws to avoid any possible damage to the system board. The four screws
cannot be removed from the heat-sink-and-fan assembly · You might have to gently twist the heat-sink-and-fan assembly to free it from the microprocessor. · Do not touch the thermal grease while handling the heat- sink-and-fan assembly.
2. Position the heat-sink-and-fan assembly on the system board. Ensure that the four screws are aligned with the holes in the system board. Follow the following sequence to tighten the four screws to secure the new heat-sink-and- fan assembly. Do not over-tighten the screws. · Partially tighten screw 2a , fully tighten screw 2b , and then fully tighten screw 2a . · Partially tighten screw 2c , fully tighten screw 2d , and then fully tighten screw 2c . Notes: · Apply appropriate amount of thermal grease to the new heat-sink-and-fan assembly. · Ensure that the heat-sink-and-fan assembly cable is toward the microprocessor fan connector on the system board.
38 neo 50s Gen 4 User Guide

PCI-Express connector cable
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26. 2. Disconnect the PCI-Express connector cable from the system board. Removal steps
PCI-Express card
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. For access, remove the computer cover. See “Computer cover” on page 26.
Chapter 7. CRU replacement 39

Replacement procedure
Note: Before installing a new PCI-Express card, remove the PCI-Express connector cables (if any) that impede the installation. See “PCI-Express connector cable” on page 39.
Power supply assembly
Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Although there are no moving parts in the computer after the power cord has been disconnected, the following warnings are required for your safety. Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. Never remove the cover on a power supply or any part that has the following label attached. 40 neo 50s Gen 4 User Guide

Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. For access, do the following:
1. Remove the computer cover. See “Computer cover” on page 26. 2. Remove the front bezel. See “Front bezel” on page 27. 3. Remove the hard disk drive, if any. See “Hard disk drive” on page 28. 4. Remove the optical drive, if any. See “Optical drive” on page 32. 5. Disconnect the power supply assembly cables from the system board. Removal steps
Chapter 7. CRU replacement 41

42 neo 50s Gen 4 User Guide

Chapter 8. Help and support

Self-help resources
Use the following self-help resources to learn more about the computer and troubleshoot problems.

Resources Product documentation: · Safety and Warranty Guide · Generic Safety and Compliance Notices · Setup Guide · This User Guide · Regulatory Notice
Lenovo Support Web site with the latest support information of the following: · Drivers and software · Diagnostic solutions · Product and service warranty · Product and parts details · Knowledge base and frequently asked questions
Ubuntu help information

How to access? Go to https://pcsupport.lenovo.com. Then, follow the onscreen instructions to filter out the documentation you want.
https://pcsupport.lenovo.com
https://help.ubuntu.com/lts/ubuntu-help/index.html

43

Call Lenovo
If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support Center.
Before you contact Lenovo
Prepare the following before you contact Lenovo: 1. Record the problem symptoms and details: · What is the problem? Is it continuous or intermittent? · Any error message or error code? · What operating system are you using? Which version? · Which software applications were running at the time of the problem? · Can the problem be reproduced? If so, how? 2. Record the system information: · Product name · Machine type and serial number The following illustration shows where to find the machine type and serial number of your computer.
Lenovo Customer Support Center
During the warranty period, you can call Lenovo Customer Support Center for help. Telephone numbers For a list of the Lenovo Support phone numbers for your country or region, go to: https://pcsupport.lenovo.com/supportphonelist Note: Phone numbers are subject to change without notice. If the number for your country or region is not provided, contact your Lenovo reseller or Lenovo marketing representative.
44 neo 50s Gen 4 User Guide

Services available during the warranty period · Problem determination – Trained personnel are available to assist you with determining if you have a
hardware problem and deciding what action is necessary to fix the problem. · Lenovo hardware repair – If the problem is determined to be caused by Lenovo hardware under warranty,
trained service personnel are available to provide the applicable level of service. · Engineering change management – Occasionally, there might be changes that are required after a product
has been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes (ECs) that apply to your hardware available. Services not covered · Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts · Identification of software problem sources · Configuration of UEFI BIOS as part of an installation or upgrade · Changes, modifications, or upgrades to device drivers · Installation and maintenance of network operating systems (NOS) · Installation and maintenance of programs For the terms and conditions of the Lenovo Limited Warranty that apply to your Lenovo hardware product, see Safety and Warranty Guide that comes with your computer.
Purchase additional services
During and after the warranty period, you can purchase additional services from Lenovo at: https://pcsupport.lenovo.com/warrantyupgrade Service availability and service name might vary by country or region.
Chapter 8. Help and support 45

46 neo 50s Gen 4 User Guide

Appendix A. Supplemental information about the Ubuntu operating system
In limited countries or regions, Lenovo offers customers an option to order computers with the preinstalled Ubuntu® operating system.
If the Ubuntu operating system is available on your computer, read the following information before you use the computer. Ignore any information related to Windows-based programs, utilities, and Lenovo preinstalled applications in this documentation.
Access the Lenovo Limited Warranty This product is covered by the terms of the Lenovo Limited Warranty (LLW), version L505-0010-02 08/2011. You can view the LLW in a number of languages from the following Web site. Read the Lenovo Limited Warranty at: https://www.lenovo.com/warranty/llw_02
The LLW also is preinstalled on the computer. To access the LLW, go to the following directory:
/opt/Lenovo
If you cannot view the LLW either from the Web site or from your computer, contact your local Lenovo office or reseller to obtain a printed version of the LLW.
Access the Ubuntu help system The Ubuntu help system provides information about how to use the Ubuntu operating system. To access the help system from Home Screen, move your pointer to the Launch bar, and then click the Help icon. If you cannot find the Help icon from the Launch bar, click the Search icon on the bottom left, and type Help to search it.
To learn more about the Ubuntu operating system, go to: https://www.ubuntu.com
Get support information If you need help, service, technical assistance, or more information about the Ubuntu operating system or other applications, contact the provider of the Ubuntu operating system or the provider of the application. If you need the service and support for hardware components shipped with your computer, contact Lenovo. For more information about how to contact Lenovo, refer to the User Guide and Safety and Warranty Guide.
To access the latest User Guide and Safety and Warranty Guide, go to: https://pcsupport.lenovo.com
Access open-source information This device includes software made publicly available by Lenovo, including software licensed under the General Public License and/or the Lesser General Public License (the open source software).
You may obtain a copy of the corresponding source code for any such open source software licensed under the General Public License and/or the Lesser General Public License (or any other license requiring us to make a written offer to provide corresponding source code to you) from Lenovo for a period of three years without charge except for the cost of media, shipping, and handling, upon written request to Lenovo. This offer is valid to anyone in receipt of this device.

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You may send your request in writing to the address below accompanied by a check or money order for $15 to:
Lenovo Legal Department Attn: Open Source Team / Source Code Requests 8001 Development Dr. Morrisville, NC 27560 Please include the version of the OS and the version of the Linux Kernel pre-shipped on this Device as part of your request. Be sure to provide a return address. The open source software is distributed in hope it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See for example the GNU General Public License and/or the Lesser General Public License for more information. To view additional information regarding licenses, acknowledgments and required copyright notices for the open source software shipped on your Device, go to /usr/share/doc/*/copyright.
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Appendix B. Compliance information
For more compliance information, refer to Regulatory Notice at https://pcsupport.lenovo.com and Generic Safety and Compliance Notices at https://pcsupport.lenovo.com/docs/generic_notices.
Certification-related information
Product name: ThinkCentre neo 50s Gen 4
Machine types: 12JE, 12JF, 12JG, and 12JH
Further compliance information related to your product is available at https://www.lenovo.com/compliance.
Operating environment
Maximum altitude (without pressurization) · Operating: From 0 m (0 ft) to 3048 m (10 000 ft) · Storage: From 0 m (0 ft) to 12192 m (40 000 ft) Temperature · Operating: From 5°C (41°F) to 35°C (95°F) · Storage:
For common desktop computers: From -40°C (-40°F) to 60°C (140°F) For all- in-one desktop computers: From -20°C (-4°F) to 60°C (140°F) Relative humidity · Operating: 20%-80% (non-condensing) · Storage: 10%90% (non-condensing)

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Appendix C. Notices and trademarks
Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user’s responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent programs covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:
Lenovo (United States), Inc. 8001 Development Drive Morrisville, NC 27560 U.S.A. Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.
Changes are made periodically to the information herein; these changes will be incorporated in new editions of the publication. To provide better service, Lenovo reserves the right to improve and/or modify the products and software programs described in the manuals included with your computer, and the content of the manual, at any time without additional notice.
The software interface and function and hardware configuration described in the manuals included with your computer might not match exactly the actual configuration of the computer that you purchase. For the configuration of the product, refer to the related contract (if any) or product packing list, or consult the distributor for the product sales. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk.

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Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development- level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux agreement(s) which may accompany software included with this product. Lenovo may update this document at any time without notice. For the latest information or any questions or comments, contact or visit the Lenovo Web site: https://pcsupport.lenovo.com Trademarks LENOVO, LENOVO logo, THINKCENTRE, and THINKCENTRE logo are trademarks of Lenovo. Intel and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Microsoft, Windows, and Cortana are trademarks of the Microsoft group of companies. DisplayPort is a trademark of the Video Electronics Standards Association. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. Wi- Fi and Miracast are registered trademarks of Wi-Fi Alliance. USB-C is a registered trademark of USB Implementers Forum. All other trademarks are the property of their respective owners.
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