rabenson wrote:This might sound daft but try yet another battery - could be you've fitted a duff one.... As you pointed out it really sounds like a dead battery.
X2, I've just had the exact same problem.
I've just refurbed an old junker from 6 pc's I have in the shed! from our upgrades and people donate them to me..it's become a bit of a self taught hobby

anyway:
Sorted 3 of these pc's so far, 3rd one was all going well,full dos format/partition jobby /win98 > XP Pro, full updates,SP3 etc and...
...same as yours,ie:
"It's recently been losing track of the date/time at startup; you go through DOS Setup, save all preset values and exit, then it loads Win XP where the time/date may be manually corrected. After a "hot" restart it's usually good.
Doesn't drop the ball while running etc"
Bummer, was thinking the pc was junk,(as I'm no expert),but it did say low cmos battery,I think...
Swapped 2 batteries...same result,lost time on each startup,great while running.
Last chance saloon,swapped another battery - fine for the last 3 weeks
( I must point out mine were all used batteries from old junkers, although they're all the exact same batteries ).
Oh, I also wiggled the battery on its contacts...probably did sod all...but it made me feel better lol.
1999 Xantia LX 2.0 HDI 110 Rusteration project...