There's no details about the PC so far so why not go back to 7 while you can. I find a lot of PCs in need of upkeep like canned air or a failed fan.
I recently upgraded my desktop from windows 7 to 10. Ever since I have found my desktop turns off automatically usually if I am streaming a video such as youtube. I can be working on other documents at the time and I have check my power settings which are OK.

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