PC Clock Loss of Time?

[VC-1]

My PC Clock losses +/- 5 min over a 12 hour period. The following is to noted:-
1) PC is left running and thus not switched off.
2) A brand new Bios Battery (CR 2032) fitted.
3) OS is Win XP with SP3 recently reloaded after formating drive.
4) The OS Time zone is set to correct one (GMT +2.00 Harare, Pretoria).
5) Win XP timer server is only (Time.windows.com) is only checked every 7
days by default.
6) The Bios is the latest version for the DFI Motherboard.

Now to my question. Why is this PC lossing +/- 5Min over 12 hour period?
I thank you in advance for any advice supplied.

 

[quik]

You seem to have covered all the bases. Only logical remaining explination is faulty motherboard I guess.

 

[mh348]

You seem to have covered all the bases. Only logical remaining explanation is faulty motherboard I guess.

Yeah it sounds like the MB is faulty.

 

[QX6700RULZ]

Could also be the effect of African time on the mobo, we seem to be regressing rather quickly back to the dark ages

p.s. soon you will only be able to handle a P4 in your board

 

[Gunny]

Not the motherboard the ocilating crystal in the chip that keeps the time is faulty. Some you can replace, I have done it on a few old motherboards.