I'm trying to get a friends compaq presario to work and had a question I hope someone can answer.
The only way the bios and config data is retained in the system is to keep the ac adaptor plugged in. When the unit is unplugged the config data resets itself to boot from the floppy drive. If I change it to boot from the hard drive, and leave the unit plugged in, the pc works fine. Once it is unplugged, though, it again loses it's config setup.
So, my question is: Is this just a battery problem? Can I replace the laptop battery to fix this problem or does it have a cmos battery that I have to open the unit to replace. Thanks for your help. I hope this made sense.