PC randomly shutting down, can't turn it back on for 1-2 hours, help please!!

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J

JC1233

Commendable
Jul 16, 2016
2
0
1,510
Hi everyone,

So just this last few weeks as the title says my PC has been randomly shutting down (by that I mean completely losing power instantly, not actually shutting down Windows).

Facts:
- Seems to happen when I am playing games or putting stress on the system, will run for hours if not doing this, will shut down within an hour if I'm gaming.
- Cannot be restarted for around 1-2 hours when this happens.
- A single clicking noise is heard, I think coming from the PSU, when it crashes. Then when I try to start up again, the clicking noise will happen whenever I click to start the PC and it will not boot up. This is a single click, the exact same sound I hear when the PC boots up properly, except it clicks and doesn't boot.
- I thought it could be an overheating issue, so I cleaned all the dust (there was quite a lot) off the parts, checked all the fans were running (they are), and after it's done the crash I've touched all of the parts inside straight afterwards and nothing seems overly hot. GPU being the hottest but still not really that hot.

It's probably a PSU issue but just wanted to see if anyone had any ideas?

Specs: ~3 years old
i5 3500k
GTX 770 ASUS
Thermaltake Toughpower Gold 750
ASROCK Z87 Motherboard

Has run without issue since I built it 3 years ago. Yes I know I probably shouldn't be still using it until I fix this issue, but I only have a tablet other than this and I need to use my PC.




 
Solution
J
It's almost certainly your PSU.

There is a remote possibility that some other component is experiencing thermal runaway - causing the PSU to shut down But this scenario would require a very unusual assumption: that the thermal runaway does not destroy the component. It almost invariably does. But the PSU protection circuit could shut your computer down before the hot component destroys itself.
You would have to buy some plastic straws, and touch all the components you can as soon as the computer shuts down. Nothing should melt a plastic straw. But I think I would just replace the power supply before even bothering with trying to find anything overheated.
(Don't use your fingers - it's amazing how many people just poke their fingers...
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J

jdlech

Honorable
May 31, 2016
168
1
10,715
It's almost certainly your PSU.

There is a remote possibility that some other component is experiencing thermal runaway - causing the PSU to shut down But this scenario would require a very unusual assumption: that the thermal runaway does not destroy the component. It almost invariably does. But the PSU protection circuit could shut your computer down before the hot component destroys itself.
You would have to buy some plastic straws, and touch all the components you can as soon as the computer shuts down. Nothing should melt a plastic straw. But I think I would just replace the power supply before even bothering with trying to find anything overheated.
(Don't use your fingers - it's amazing how many people just poke their fingers into things to see if they're burning hot, with rather predictable results)
 
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Solution
J

JC1233

Commendable
Jul 16, 2016
2
0
1,510


Thanks for the advice, bought a new PSU and it seems to run fine!
 
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