...simply replacing the CMOS battery? If the battery is completely dead, it's possible the settings aren't being saved as a result and it could be causing the problem. The battery is only about $5 and is easy to replace.
Have you tried swapping it a known "good" keyboard?
If that doesn't fix it, it may be a bad motherboard.
Hope this helps.
Im working on a friends computer and it will not start in normal mode. It shows the compaq screen then goes to the Windows ME screen then stays on a black screen after that with the curser in the corner of screen. It will boot into safe mode.
Also when i go into the bios and try to save and exit with f10 it will not let me. It acts like my f10 button doesnt work. It will let me esc but not f10 on anything.