screen,keyboard and mouse stopped working but computer still running.

yopig

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Jan 28, 2014
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I was running prime95 and every thing suddenly blanked out. There were two temps for my cpu i dont know which one to trust. 45C and 80C. Can you please tell me what happened im not sure what happened.
 
Solution
Chances are it was your northbridge or GPU that overheated. The northbridge is the chip on your mainboard that has a cooler on it (sometimes with a fan, most of the times without). Your GPU is located on your graphics card (unless you are using your built-in CPU graphics).

yopig

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Jan 28, 2014
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I restarted my computer and it is running fine. Straight after it turned off I touched the heat sink (hyper 101) and I was only warm. I have reseated it many times with the correct amount of thermal paste and it has two fans attached to it. This is the first time it has happened and I have had temperatures abit higher before.

Specs:
Mobo: Fm2a75 pro-m
Cpu: a8 5600k
Psu: thermaltake litepower 500w
Gpu: R9 270x
Ram 8 gb 1660

 

DeathAndPain

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Jul 12, 2013
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Chances are it was your northbridge or GPU that overheated. The northbridge is the chip on your mainboard that has a cooler on it (sometimes with a fan, most of the times without). Your GPU is located on your graphics card (unless you are using your built-in CPU graphics).
 
Solution

yopig

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Jan 28, 2014
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So how do I stop it from happening again?
 

DeathAndPain

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Jul 12, 2013
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Provided it is your Northbridge, the way is the same I followed to fix similar crashes on my mainboard: Remove that cooler (it is usually fixed by means of two push pins. Loosening those without damaging the mainboard usually requires getting the mainboard out of the case up front).

Once the cooler is off, remove the thermal pad from it (or thermal grease, but I expect a pad to be in place). Make sure not to scratch the cooler surface in the process, so use no knives, screwdrivers or the like. Your fingernails are ok though.

Then wipe everything extra-clean with isopropyl alcohol, toluol, or, even better if you can get hold of it, chloroform, and apply a dot of good thermal grease. Thermal grease conducts heat better than those pads, and by selecting a good thermal grease like the Prolimatech PK-1, you can further optimize things. Then put the cooler back in place and fasten it by pushing down the push pins.

If there is enough space above your northbridge cooler (no graphics card getting in the way), you can even replace the cooler with a better model (better = more surface = more ribs or even fingers). Such replacement northbridge coolers are available in the internet for like $12. I could not do it because my graphics card is hovering right above the NB cooler, but replacing the pad with the grease fixed everything for me nicely.