Question Mysterious shut down

Apr 11, 2021
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I will update this latter today when I return home. I have a custom built desktop I purchased about 3 or 4 years back. It has recently started shutting down every 15 to 30 mineuts. Naturely I though overheating was the cause so I took it to be cleaned up at a local computer repair place. They got it running and working for hours so it was assumed that the problem had been solved by the cleaning. I took it home and after 2 days the problem started again. On a hunch I moved the desktop downstairs where it started working . After a day the same problem. My question is could the power cord itself be the issue
 
Apr 11, 2021
3
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10
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Processor AMD FX 8300 eight core processor 3.30 ghz
16 gig ram
Windows 10

I must confess I'm not sure how to find out the power cord model
 

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