/ Sign-up
Your question

BIOS reset with PSU turned off?

  • Chipsets
  • BIOS
  • Motherboards
Last response: in Motherboards
January 8, 2009 2:24:31 AM


So yesterday I turned off my PC through Windows, then the PSU behind it, then the UPS and finally the multiple socket power outlet.

I did this because today the electricity company guys were coming to do some work, so to be safe I made sure I turned everything important off.

It wasn't the first time I did this, but this time I think it lasted at least 6 hours with everything turned off. I don't remember how much time I left it off in previous occasions.

This time, however, it seems my BIOS settings reset completely after I turned my PC back on, and I wasn't really expecting that as I had left everything turned off before and there were no problems. Just now I tried leaving everything off for about 5 minutes and the BIOS didn't reset. It's a GA-K8NXP SLI nForce 4 from 2006.

Is it the battery that's getting weaker or did something else wrong could have happened (possible short circuit when I turned PC back on)?


More about : bios reset psu turned

January 8, 2009 2:00:14 PM


I just left the computer's PSU turned off again this night and the BIOS reset once more. Normal?
a b V Motherboard
January 8, 2009 2:07:20 PM

Your CMOS/BIOS battery is dying. Open the case and on the motherboard you'll find a watch battery, pull it out and go buy a new one...
January 8, 2009 2:33:09 PM

Thanks I'll do that then :)