Lenovo ThinkCentre M90n-1 User Manual

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 17.
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M90n-1 User Guide

Lenovo ThinkCentre M90n-1 Specifications

General

Operating System	Windows 10 Pro
Memory	Up to 16GB DDR4
Storage	Up to 1TB SSD or 2TB HDD
Graphics	Intel UHD Graphics
Weight	505g (1.11 lbs)
Ports	1 x HDMI
Wireless	Wi-Fi 6, Bluetooth 5.0
Power Supply	65W AC adapter