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PC sometimes won't turn on until I unplug it from the wall for a 30 seconds or so. Faulty PSU? (self.pcmasterrace)

submitted 5 months ago* (last edited 5 months ago) by hypertown to c/pcmasterrace

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Just like in the title my PC has an issue when it won't turn on. Power button does nothing, fans do not spin, PC is completely dead. First time it happened was when I put it to sleep, sometimes it wouldn't wake up so I just avoided putting it to sleep as a temporary solution that become quite permanent... Simple power off worked well enough but recently it won't start even when I turn it off. If that happens I need to flip the power button on the PSU for a 30 or so seconds then it turn it back on and I can start PC no problems.

From what I read on the Internet people suggest faulty PSU. Is there a way to confirm that? I don't want to buy a new PSU if the old one is still good. It has little over 5 years so it's not exactly new but certainly not too old.

I also had one crash that looked like PSU fault since PC just shut down suddenly but I blamed it on some power drop in the grid at the time.

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[–] cryptiod137 2 points 5 months ago (1 children)

Try unplugging it from the wall, and then hitting the power button. It you see any lights or fan activity, some cap somewhere still has juice

[–] hypertown 1 points 5 months ago (1 children)

Light flashes and fans move for a fraction of the second but isn't that normal? I always do that when I want to quickly discharge caps and swap some components without worrying about shorting something.

[–] cryptiod137 2 points 5 months ago

Depends on how long or possibly how many fans. My PC won't spin any fans for example, just turn on lights.

My instructors always said that wierd ass issues are usually power supplies, if you don't have another one you could test with then I would buy one from somewhere with a good return policy