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To change the battery:
1. Turn off the computer and disconnect the power cord from the electrical outlet
and from the computer.
2. Remove the computer cover. See “Removing the cover” on page 10.
3. Access the system board components. See “Accessing system board
components” on page 12.
4. Locate the battery. See “Identifying parts on the system board” on page 13.
5. Remove the old battery.
6. Install the new battery.
7. Replace the computer cover, and connect the cables. See “Replacing the cover
and connecting the cables” on page 22.
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.
8. Turn on the computer and all attached devices.
9. Use the Setup Utility program to set the date and time and any passwords. See
Chapter 2, “Using the Setup Utility,” on page 23.
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 Lenovo Care program.
To erase a forgotten password:
1. Remove the computer cover. See“Removing the cover” on page 10.
2. You might have to access the system board components. See “Accessing system
board components” on page 12.
3. Locate the Clear CMOS/Recovery jumper on the system board. See
“Identifying parts on the system board” on page 13.
4. Move the jumper from the standard position (pins 1 and 2) to the maintenance
or configure position (pins 2 and 3).
Note: If the system board has only two pins for clearing CMOS, add a jumper
to the two pins.
5. Move the Clear CMOS/Recovery jumper back to the standard position (pins 1
and 2).
Chapter 1. Installing options 21