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Computer turns itself off and wont turn back on for a few minutes

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August 2, 2013 6:01:05 PM

I began having this problem a few weeks ago; occasionally my computer will shut itself off (usually when I'm working it hard doing something like playing a game, but not always) and refuse to turn back on for a minute or two. Unplugging and replugging the computer and flipping the PSU switch on and off doesn't seem to help, but I notice this hiss/click sound right before I'm able to turn my computer on again.

Originally I thought this was a PSU issue, but I've noticed that my AMD 6300 heats up very quickly when I watch it under Speccy (I'm told it turns itself off at 62 Celsius, when playing a game it hangs around high 40s - mid 50s). I'm not overclocking but I live in Texas and the temperature in my room in the summer is around 85 Fahrenheit. I'm using the stock HSF and it seems to be running fine, the airflow out of the computer isn't obstructed by anything. At the moment I'm trying to overheat my computer to know for sure that the problem is the CPU, but I thought I'd ask you guys what you thought.

CPU: AMD 6300, stock HSF
PSU: Thermaltake 600W
MB: Gigabyte 990FXA UD3

More about : computer turns wont turn back minutes

a b à CPUs
August 2, 2013 6:10:53 PM

The motherboard VRMs are overheating most likely. This would cause your computer to be unable to boot up again for a few minutes. Maybe add a fan over the VRM and see if that helps?

An over heating power supply would do the same thing afaik.
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August 2, 2013 6:15:51 PM

Sounds like your heatsink isn't doing it's job correctly. Whenever your CPU overheats, your motherboard will shut it off to prevent burning and melting of any components. 600W of power is more than enough for that kind of processor, so I would rule that out. I suggest reseating and ensuring your heatsink is sitting on the CPU correctly and try to find a way to cool your computer even further. Using good thermal paste is crucial as well.
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August 2, 2013 6:19:28 PM

ElMoIsEviL said:
The motherboard VRMs are overheating most likely. This would cause your computer to be unable to boot up again for a few minutes. Maybe add a fan over the VRM and see if that helps?


My temperature monitor shows my motherboard at 32 C
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a b ) Power supply
a b à CPUs
August 2, 2013 6:30:17 PM

Its most likely your CPU fan/heatsink, I've had this issue with a friends PC and it was a simply case of just swapping out the fan.
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a b à CPUs
August 2, 2013 6:35:12 PM

Jefferist said:
ElMoIsEviL said:
The motherboard VRMs are overheating most likely. This would cause your computer to be unable to boot up again for a few minutes. Maybe add a fan over the VRM and see if that helps?


My temperature monitor shows my motherboard at 32 C

Is your power supply the same as his? http://www.tomshardware.com/forum/387207-31-power-shuts
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August 2, 2013 6:38:30 PM

ElMoIsEviL said:
Jefferist said:
ElMoIsEviL said:
The motherboard VRMs are overheating most likely. This would cause your computer to be unable to boot up again for a few minutes. Maybe add a fan over the VRM and see if that helps?


My temperature monitor shows my motherboard at 32 C

Is your power supply the same as his? http://www.tomshardware.com/forum/387207-31-power-shuts


Yes
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a b à CPUs
August 2, 2013 6:45:06 PM

Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/
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August 2, 2013 6:47:20 PM

ElMoIsEviL said:
Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/


What should I be watching for?
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a b à CPUs
August 2, 2013 7:26:07 PM

Jefferist said:
ElMoIsEviL said:
Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/


What should I be watching for?


Fluctuations away from 12v.
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August 2, 2013 7:32:16 PM

ElMoIsEviL said:
Jefferist said:
ElMoIsEviL said:
Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/


What should I be watching for?


Fluctuations away from 12v.


It hangs around 8v
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Best solution

a b à CPUs
August 2, 2013 7:41:57 PM

Jefferist said:
ElMoIsEviL said:
Jefferist said:
ElMoIsEviL said:
Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/


What should I be watching for?


Fluctuations away from 12v.


It hangs around 8v


There you go. It's the PSU. You're going to have to get a new one. Might I suggest you try and get one with an 80+ gold rating if possible (bronze works if the model is from a reputed brand such as Seasonic, Corsair, XFX to name a few).

The power supply is one area where one shouldn't go too cheap. If it fails it can take out anything and everything connected to it.
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October 9, 2013 1:14:54 PM

Jefferist said:
ElMoIsEviL said:
Try running this and monitoring the Voltages on the 12v rail(s) while the test is running: http://www.ocbase.com/


What should I be watching for?


How do you watch the voltages on the 12v rail(s)?
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