Archived from groups: alt.comp.hardware.homebuilt,alt.comp.hardware.homedesigned,alt.comp.hardware.pc-homebuilt (
More info?)
I had this same problem with an HP Pavilion on which I had just replaced the
POwer supply and now I get continuous error messages 'cannot find operating
system.' The BIOS cant find the hard drive or any boot drive.
I continuously go into the bios and reset it, entering all the paraeters and
exit saving everyting and on re-boot, everything is lost all over again. (HP
didnt have the vaguest idea what was causing this ) but the error message on
HARD boot was accompanied occasionally by an invalid checksum message. So I
tried testing the battery and it does read 3.02 volts (presumably about 3
under load?)
Anyone know what this might be?
Hugo
"William W. Plummer" <William.PlummerXNOSPAMX@alum.mit.edu> wrote in message
news:Txwec.122417$K91.335600@attbi_s02...
>
> "kony" <spam@spam.com> wrote in message
> news:ktkk70dqdfood2a69opfl7g2o0m2f66hfq@4ax.com...
> > On 12 Apr 2004 00:51:47 -0700, MXCrules450@hotmail.com (MXC rules!)
wrote:
> >
> > >Conor <conor_turton@hotmail.com> wrote in message
> news:<MPG.1ae3f4c6ae48ba2398a2ce@news.claranews.com>...
> > >> In article <Xns94C8B131A596D04112004@195.131.52.135>, HilaryDuff133
> > >> @ablang-duff.com says...
> > >> > I just 'inherited' a p3-500, and every now and then, upon
bootup,
> I
> > >> > will see the "CMOS checksum error" message. What does that mean
and
> how do
> > >> > I remedy it?
> > >> >
> > >> THe CMOS backup battery is going flat and it is resetting to factory
> > >> default. You need to change the battery on the motherboard.
> > >
> > >Not true. I had the same problem and a new battery made no
> > >difference. Googling pointed to some kind of communication problem
> > >between the CPU and the memory. I reseated the CPU in the socket and
> > >it cleared it right up. Strange I know, but that's what did it.
> >
> > Errr, ok, but that's a very unusual problem you had. Typically the CPU
> > will stay in the socket unless the system is moved about violently, most
> > often it's the battery causing this to suddenly start happening on a
> > machine that age.
>
> Power spikes (lightning) can wipe the CMOS memory. The checksum detects
> this. When you exit from the CMOS Setup and SAVE the settings, the
> checksum will be recomputed and stored. The problem should go away. If
it
> doesn't, the next easiest thing to try is the battery -- its a hearing aid
> battery (usually #2032) and is available at Radio Shack for a few dollars.
>
>