Pc shuts down randomly when playing games

ivotje4 · Nov 13, 2015

I got this problem for a really long time now and i can't find the answer.
My pc mainly shuts down with cpu heavy games like guildwars 2 and civ 5. Cpu temperature is usually around 50 when it shuts down so i dont think it's an overheating problem.

Specs:
Cpu: AMD A8-6600K APU
Graphics card: Saphire Radeon R9 290X tri-X
RAM: 8GB
Motherboard: MS-7721
Power suply: corsair cx-750
With windows 10 64-bit

ivotje4 · Nov 13, 2015

Edit: Cpu has a thermal margin of 50 when it restarts

bignastyid · Nov 13, 2015

Well it's most likely failing secondary caps in the psu. The CXs are notorious for this, see around 5 a week fail on these forums with similar symptoms.

Onus · Nov 13, 2015

If you take the side of your case off and aim a common fan into it while playing, do you still get shutdowns? If not, that almost certainly means a thermal problem.
What does a program like HWMonitor say about your motherboard temps?
You also have a PSU that has been dinged pretty hard for quality issues. Does it feel hot after a shutdown? Has your PC shut down like this since it was new? How old was your computer when this problem first started?

ko888 · Nov 13, 2015

That Corsair CX750 is known to shut down due to triggering of its OTP (Over Temperature Protection) circuit. During heavy gaming the PSU will rise above its rated 30°C maximum operating temperature. If your room temperature is higher than 23°C then the 30°C maximum will be reached at a lower power draw.

Solution? Get a better quality PSU.

ivotje4 · Nov 13, 2015

Amd overdrive says TMPIN1 IS 47.0 TMPIN2 51.0 AND TMPIN3 31.0 and the psu is sometimes hot but sometimes its like roomtemp (around 18degrees) and the psu was only 2months old when it first started

ivotje4 · Nov 13, 2015

Since every answer so far says its that the pcu is bad does anyone have suggestions for which one i need?

Onus · Nov 13, 2015

I'm not fond of telling people to throw money at a problem, but as notorious as the CX line is, I'm going to suggest replacing it. XFX typically has some fairly inexpensive PSUs for what you get; they're all made by Seasonic.

ko888 · Nov 13, 2015

ivotje4 :

Is the PSU's cooling fan getting its cooling air from inside of the computer case or from outside of the computer case?

ivotje4 · Nov 13, 2015

Psu is getting the air from inside

ko888 · Nov 13, 2015

ivotje4 :

So the PSU is operating in an environment that is substantially higher than your 18°C room temperature as the graphics card heats up the air inside the computer case.

Onus · Nov 13, 2015

What case do you have? If the PSU mounts on the bottom, and you can orient it with the fan down so it draw its own air from outside of the case, you may at least temporarily alleviate this problem until you can replace the PSU. If you can do that, make sure the case isn't resting directly on carpet which will smother it (I put my cases with bottom-mounted PSUs on a thin board).

ivotje4 · Nov 13, 2015

Some sort of coolermaster case i don't know the exact name

Onus · Nov 17, 2015

See where the PSU mounts. If on the bottom, it should be fan-down to pull its own air from under the case (assuming there's a grill in the bottom of the case; there should be).

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