Erasing Lost Or Forgotten Passwords (Clearing Cmos) - Lenovo 3257A5U 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
computer. Then, disconnect all power cords from electrical outlets and
disconnect all cables that are connected to the computer.
2. Open the computer cover. See "Opening the computer cover" on page 14.
3. Locate the Clear CMOS /Recovery jumper on the system board. See "Locating
parts on the system board" on page 11.
4. Move the jumper from the standard position (pin 1 and pin 2) to the
maintenance position (pin 2 and pin 3).
5. Close the computer cover and connect the power cord. See "Completing the
parts replacement" on page 31.
6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn
off the computer by holding the power switch for approximately five seconds.
7. Repeat step 1 through step 2.
8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1
and pin 2).
9. Close the computer cover and connect the power cord. See "Completing the
parts replacement" on page 31.
Chapter 2. Installing or replacing hardware
33