battery

There are two solutions to this:

Solution 1:

Try some of the backdoor passwords that are often built into the BIOS following the setups on this site.

Solution 2:

1. Turn off and unplug the computer
2. Open the computer and look for a flat "watch" battery on the mother board
3. Remove this battery. You may have to gently pry it out using a small tool.
4. Plug your computer in and turn it on without the better.
5. Turn your computer off and reinsert the battery and turn the system back on.