Question Computer shutdown after a while after CMOS change battery

Oct 10, 2021
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I have an old dual core computer showing CMOS battery error on boot, and showing wrong date in Windows, so I take a new battery and change it.
After that, PC shuts down after a short while, sometimes it doesn't even reach Windows boot.
I tried a couple of different batterys, even the old one, and without any battery, and the problem remains. This never happened before.
What could be the problem?
 

ravin_29

Commendable
Mar 24, 2019
93
3
1,535
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May be it's just a coincidence that you might be having a bad PSU now and it just happened around the time you changed the CMOS battery.
 

ravin_29

Commendable
Mar 24, 2019
93
3
1,535
2
Basically what I meant is CMOS battery had nothing to do with pc shutting down. It's mere coincidence. As you figured out old thermal paste was the issue not CMOS battery.
 

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