Computer won't start.

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Enigma
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Computer won't start.

Post by Enigma » 2019-07-04 11:26pm

I'm having issues with my father in law's computer. Yesterday, the power flickered in the house and his computer shut down. But now it won't boot up. It's dead quiet with only the PSU's LED glowing green. Is it toasted?
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Re: Computer won't start.

Post by bilateralrope » 2019-07-05 12:25am

I've sometimes had my computer not start until I change which socket of the power strip I've plugged it into. Then later it happened again and I fixed it by changing back to the first one. I don't know why that worked, but it did. It can't hurt to try.

Though I suspect that something in the computer is broken.

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Re: Computer won't start.

Post by Ace Pace » 2019-07-05 05:40am

Sounds like the power supply unit is toast.
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Re: Computer won't start.

Post by Enigma » 2019-07-06 03:43pm

Replaced the PSU. It booted up and it was running for about ten minutes before dying again. It won't boot up, no fans running, dead quiet. Possibly blew the replacement PSU. Back to square one.
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Re: Computer won't start.

Post by SpottedKitty » 2019-07-06 11:14pm

It's been a while since I took the case off a computer; do PSUs still have fuses? That's what I'd check first, in a suspected "new PSU blown" situation. There might be a short or ground somewhere.
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Re: Computer won't start.

Post by Lord Revan » 2019-07-07 09:16am

SpottedKitty wrote:
2019-07-06 11:14pm
It's been a while since I took the case off a computer; do PSUs still have fuses? That's what I'd check first, in a suspected "new PSU blown" situation. There might be a short or ground somewhere.
When I assembled mine there weren't any obvious fuses visible but then I wasn't actively searching for a cover or something like that, the PSU I got is this big black box with a power switch on it.

Though if the PC bricked (or so it seems) a brand new PSU there's probably some other issue and bricking the PSU is just a symptom of that issue.
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Re: Computer won't start.

Post by Enigma » 2019-07-07 10:18am

So what's killing it? Bad motherboard?
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Re: Computer won't start.

Post by Isolder74 » 2019-07-07 05:15pm

Enigma wrote:
2019-07-07 10:18am
So what's killing it? Bad motherboard?
Based on your descriptions that is hard to say. I'd have to actually look at it to tell you anything for sure. However, if putting in a new power supply immediately bricks it then the problem has to be on the motherboard somewhere. A power surge can cause damage almost anywhere so you might not be able to locate the actual problem.
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