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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17 points

Cutting the power for 30 seconds drains capacitors. The most likely culprit is in the PSU, but I’ve also seen it be the motherboard or GPU.

Desktop PSUs have been pretty standardized for 25 years. The odds are pretty good that you still have an old one, or know someone that you could borrow from long enough to test.

Failing that, just get one from a place with a decent return policy. I like Micro Center, if you’re near one of those.

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4 points

It’s always the damn caps!

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4 points

The question is which one on which component :P

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3 points

At least you can see blown capacitors sometimes.

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2 points

I have some very old no name PSU but it’s like 250W. Now GPU can draw this much power alone so my best bet would be buying new. With the option to return it might be worth a shot. Thanks!

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