Erasing A Lost Or Forgotten Password (Clearing Cmos) - Lenovo ThinkCentre A35 8139 User Manual

Refer to "Lithium battery notice" on page x for information about replacing and
disposing of the battery.
To change the battery:
10. Use the CMOS Setup Utility program to set the date and time and any

Erasing a lost or forgotten password (clearing CMOS)

This section applies to lost or forgotten passwords. For more information about
lost or forgotten passwords, go to the Access IBM program.
To erase a forgotten password:
24
User Guide
1. Turn off the computer and all attached devices.
2. Unplug the power cord and remove the cover. See "Identifying parts on the
system board" on page 12.
3. Locate the battery. See "Identifying parts on the system board" on page 12.
4. If necessary, remove any adapters that impede access to the battery. See
"Installing adapters" on page 15 for more information.
5. Remove the old battery.
6. Install the new battery.
7. Replace any adapters that were removed to gain access to the battery. See
"Installing adapters" on page 15 for instructions for replacing adapters.
8. Replace the cover, and plug in the power cord. See "Installing adapters" on
page 15.
Note: When the computer is turned on for the first time after battery
replacement, an error message might be displayed. This is normal after
replacing the battery.
9. Turn on the computer and all attached devices.
passwords. See Chapter 2, "Using the CMOS Setup Utility program," on page
27.
1. Turn off the computer and all attached devices.
2. Remove the cover. See "Removing the cover" on page 11.
3. Locate the Clear CMOS/Recovery jumper on the system board. See
"Identifying parts on the system board" on page 12.
4. If necessary, see "Installing adapters" on page 15 to remove any adapters that
impede access to the Clear CMOS/Recovery jumper.