Bad connection?
All it takes is a bad connection. That can be caused by a temperature change a tiny bit of corrosion or various undermined things. Computer, and related gear, connectors are designed to be cheap not necessarily good.
I have had a stack of computers brought to me by friends to 'fix' and unplugging things cleaning contacts and replacing has fixed an amazing number of them.
Worth a try every time. I had one yesterday, computer going crazy because of lack of memory. One memory stick had bad contact. Quick easy fix to try first. Owner happy again.
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