Erasing Lost Or Forgotten Passwords (Clearing Cmos) - Lenovo ThinkCentre M90z 0852 User Manual

Erasing lost or forgotten passwords (clearing CMOS)

This section provides instructions on how to erase lost or forgotten passwords,
such as a user password.
To erase a lost or forgotten password, do the following:
1. Remove all media from the drives and turn off all attached devices and the
2. Remove the computer cover. See "Removing the computer cover" on page 16.
3. Locate the Clear CMOS /Recovery jumper on the system board. See "System
4. Move the jumper from the standard position (pin 1 and pin 2) to the
5. Close the computer cover and connect the power cord. See "Completing the
6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn
7. Repeat step 1 through step 3.
8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1
9. Close the computer cover and connect the power cord. See "Completing the
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User Guide
computer. Then, disconnect all power cords from electrical outlets and
disconnect all cables that are connected to the computer.
board part and connector locations" on page 13.
maintenance position (pin 2 and pin 3).
parts replacement" on page 55.
off the computer by holding the power switch for approximately five seconds.
and pin 2).
parts replacement" on page 55.