[SOLVED] Windows 10 PC Turning Off At Random

Sep 21, 2020
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Hello everyone,

I have a custom-built computer that started turning off randomly after working fine for the last ~5 years, give or take. When I go to click the power button at the front, it won't turn on. However, if I flip the PSU button off and then back on, the power button on the front then turns the PC on.

It'll stay on anywhere from a few hours to several hours, and then just shuts off.

What can I do to diagnose why this is happening? My knee-jerk reaction is to point a finger at the PSU, but I'm wanting to be sure. I'm not very familiar with Windows 10 quite yet, but is there anything I could review or anything I could be running to figure out what could cause this?

Thanks in advance for any help I can get.