Hi,
Im trying to fix a laptop for a friend. When i cold boot the laptop, it asks me for the BIOS disk so that it can flash the bios , after it has done this it will load windows 98, reset the laptop and its still ok, however if i power off then on again i must reflash the BIOS to get going again, does anyone has any ideas?

The laptop is a Thoshiba Satllie 2540CDS

UPDATE:
okay, heres what i did:
opened up the laptop, found 2 small nickel metal hydride batteries(rechargeable i think?), one half the size of the other. Deciding i couldnt do anything there i re assambled the laptop. Turned it on and for some reason it worked. i loaded the system, restarted it, cold booted it, and it seemed fine, so i left it on for about half an hour, then powered off, then on and the problem returned. i am at a loss to explain this.