BIOS clock creeping significantly

[NeoPTLD]

This happens all the time. I message someone on AIM, then the time stamp on the response predates the time stamp on the msg I sent.

I check the BIOS clock against my watch and it's off a few minutes.

I have Windows automatically synch with server on regular interval, but it'd be off a minute or two in a day, but not much more than a few minutes. Sometimes, it'd be ahead, or behind, but give it a day and it's off a minute or two from true time.

This happens with the computer on.

Does anyone know what causes time creeping?

 

[Fardringle]

You probably need to replace the CMOS battery on the motherboard. It's silver and about the size of a quarter. If you post the brand and model number of your motherboard we can show you exactly where it is located.

 

[sutahz]

CR2032, standard watch battery. ~$3.5 at your local store.

 

[NeoPTLD]

It does NOT lose time when the computer is off and it never loses settings in BIOS. It doesn't seem like the battery to me.

EDIT:
It's definitely not the battery. Pulled it and it checked at 3.11v.