How to remove the supervisor password
To remove an SVP, do the following:
(B) If an SVP has been forgotten:
1. Turn on the computer.
2. Unplug the AC adapter cable from the computer.
3. Remove the battery pack.
For how to remove the battery pack, see “1010 Battery pack” on page 57.
4. Remove the backup battery.
For how to remove the backup battery, see “1110 Fan, backup battery, and
system board” on page 77.
5. Wait about one minute.
6. Reinstall the backup battery and the battery pack.
Both the SVP and the user password will be removed.How to remove the user password
To remove a user password that has been forgotten, when the SVP is known, see
“How to remove the supervisor password”
tooken from "Hardware Maintenance Manual - IdeaPad" (45n3684_01.pdf - http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-71062