Lenovo ThinkCentre M90a User Manual

Contents
About this documentation . . . . . . . . iii
Chapter 1. Meet your computer . . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Rear . . . . . . . . . . . . . . . . . . . . 3
Locating connectors on system board . . . . . . . 4
Features and specifications . . . . . . . . . . . 6
Statement on USB transfer rate . . . . . . . . 7
Chapter 2. Get started with your
computer . . . . . . . . . . . . . . . . . 9
Adjust the computer stand (for selected models) . . . 9
Get started with Windows 10 . . . . . . . . . 10
Windows account . . . . . . . . . . . . 10
Windows user interface . . . . . . . . . . 11
Connect to networks . . . . . . . . . . . . . 12
Connect to the wired Ethernet . . . . . . . 12
Connect to Wi-Fi networks (for selected
models) . . . . . . . . . . . . . . . . 12
Use Lenovo Vantage . . . . . . . . . . . . . 12
Use Night light . . . . . . . . . . . . . . . 13
Use the multi-touch screen (for selected
models) . . . . . . . . . . . . . . . . . . 13
Use multimedia . . . . . . . . . . . . . . . 16
Use audio . . . . . . . . . . . . . . . 16
Use the camera (for selected models) . . . . 16
Connect to an external display . . . . . . . 16
Chapter 3. Explore your computer . . 19
Manage power . . . . . . . . . . . . . . . 19
Set power button behaviors . . . . . . . . 19
Set the power plan . . . . . . . . . . . . 19
Transfer data . . . . . . . . . . . . . . . . 19
Connect to a Bluetooth-enabled device (for
selected models) . . . . . . . . . . . . 19
Use the optical drive (for selected models) . . 20
Use a media card (for selected models) . . . . 20
Purchase accessories . . . . . . . . . . . . 21
Chapter 4. Secure your computer
and information . . . . . . . . . . . . 23
Lock the computer . . . . . . . . . . . . . 23
Log in to your computer securely . . . . . . . . 23
Use passwords . . . . . . . . . . . . . 23
Use face authentication (for selected
models) . . . . . . . . . . . . . . . . 24
Use software security solutions. . . . . . . . . 25
Use firewalls . . . . . . . . . . . . . . 25
Use antivirus programs . . . . . . . . . . 25
Use computrace Agent software embedded in
firmware (for selected models) . . . . . . . 25
Use BIOS security solutions . . . . . . . . . . 25
Erase all storage drive data . . . . . . . . 26
Use the cover presence switch . . . . . . . 26
Use Intel BIOS guard . . . . . . . . . . . 26
Use Smart USB Protection. . . . . . . . . 26
Chapter 5. UEFI BIOS . . . . . . . . . 29
What is UEFI BIOS. . . . . . . . . . . . . . 29
Enter the BIOS menu. . . . . . . . . . . . . 29
Navigate in the BIOS interface . . . . . . . . . 29
Change the display language of UEFI BIOS . . . . 29
Set the system date and time . . . . . . . . . 30
Change the startup sequence . . . . . . . . . 30
Enable or disable the configuration change
detection feature . . . . . . . . . . . . . . 30
Enable or disable the automatic power-on
feature . . . . . . . . . . . . . . . . . . 31
Enable or disable the smart power-on feature . . . 31
Enable or disable the ErP LPS compliance mode . . 31
Change the ICE performance mode . . . . . . . 32
Change BIOS settings before installing a new
operating system . . . . . . . . . . . . . . 32
Update UEFI BIOS. . . . . . . . . . . . . . 32
Recover from a BIOS update failure . . . . . . . 33
Clear CMOS . . . . . . . . . . . . . . . . 34
Chapter 6. Troubleshooting,
diagnostics, and recovery . . . . . . . 35
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 35
Troubleshooting . . . . . . . . . . . . . . 35
Startup problems . . . . . . . . . . . . 36
Screen problems . . . . . . . . . . . . 37
Audio problems . . . . . . . . . . . . . 38
Network problems . . . . . . . . . . . . 38
Performance problems . . . . . . . . . . 41
Storage drive problems . . . . . . . . . . 42
CD or DVD problems . . . . . . . . . . . 42
Serial connector problems . . . . . . . . . 43
USB device problems . . . . . . . . . . 43
Software problems. . . . . . . . . . . . 44
Diagnostics . . . . . . . . . . . . . . . . 44
Lenovo diagnostic tools . . . . . . . . . . 44
Recovery . . . . . . . . . . . . . . . . . 44
© Copyright Lenovo 2020 i

Lenovo ThinkCentre M90a Specifications

General

Brand	Lenovo
Model	ThinkCentre M90a
Category	Desktop
Language	English