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efrain12

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Consistent "CMOS battery low" message

I have a faily new PC, running Windows XP pro, with an AMD athlon 2200 processor.
Just noticed that, when I disconnect the computer from the electrical outlet, it shows
A message for “CMOS battery low”; I checked the battery and is fully charged (3 v);
Go back to the CMOS setup, update all that info, exit, reboot (not unplugging), Windows
Opnes normal; Now, if I turn off the computer, disconnect the power cable, it shows
Again  the same message about low battery; furthermore, I replaced the battery, repeated
the procedure and same, samo: “CMOS battery low”.
Will appreciate any help to this issue.
TIA
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Mark Poirier
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just remove the battery for 5 minutes and test
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efrain12

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I have been doing more testing on this computer.
If, after resetting the CMOS setup (time, etc), start Windows, everything works perfect.
Now, if I shut down the PC (BUT NOT UNPLUGGING POWER CABLE), for a few minutes, or any longer period of time, EVERYTHING IS KEPT NORMAL, no "battery low" messages.
I have done this several times.
ON the contrary, if, after opening Windows (everything working OK), shut down the PC AND DISCONNECT THE POWER CABLE, EVEN FOR A MINUTE OR TWO, plug back the poser cable and start the PC, there you have the infamous message again !!!!..
Do you guys know if this is a serious issue, or just a matter of adjusting the system clock, whenever I had to unplug the computer from the wall?.
PLease advise, since I don't have plans to replace the mobo; like I said, other than the time, EVERYTHING SEEMS TO BE WORKING FINE.
Fist time I face this kind of problem in more than 10 years of working with PC's !.
Thanks for your time and commets.

Efrain
IF - you unplug the power and it loses the clock, the battery is either flat or not connecting. It may just be a dry solder joint. Take it to a PC shop for an opinion.

Chris B
did you remove the battery ? at that point you can inspect the contacts too
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The motherboaed's model is K7SOM+.
I believe there's not much to do about it; to me it seems to be a minor correction to do JUST when the PC needs to be unplugged, on a daily basis, a PC does not need to be umplugged, just turn it ON or OFF.
It's not worth it to spend time and money to take it to a PC shop and have similar conclusions.