PC shuts down when playing games at high FPS

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TotalNoobBuilder

Prominent
Mar 5, 2017
9
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510
So about two months ago I built my first PC and I've had problems with gaming ever since. When gaming, I can normally get 5-60 minutes of gameplay before (even playing games like CS:GO) the PC will shut down as if someone had taken the power plug out of the wall. It doesn't restart, it just remains shut down. When I attempt to turn it back on it seems to have a flash of power, but quickly returns to its dead state with a small red light appearing on the PSU, I then must flip the switch on the PSU off, then back on and everything powers on normally. I've only recently noticed that if I enable an FPS limiter, such as 60fps in game, I can play for hours on end. I've already replaced one power supply, and my CPU runs at a constant 40-60 celcius and my GPU ranges from 50-70 Celsius. I still have no clue what could be causing this and I'd rather not limit my system to half of its potential but I don't know where else to go.

Build:
CPU i7-7700k
GPU- gigabyte Aorus GeForce GTX 1080 Ti 11G
PSU- corsair AX1500i (I went way overboard with the replacement just because I could)
Mobo- asus ROG Maximus IX Code
OS- windows 10 64-bit

I do have malwarebytes so I'm fairly sure it's not a virus
 
Solution
tothergnome
It's something wrong with the power supply, here is why. Once you GPU goes to 90-100% (which again is normal and shouldn't crash your PC) your GPU requires more electricity. HOWEVER, there is not enough electricity to feed it, which explains your problem to why your PSU crashes. It's getting overloaded, and too little electricity means it will turn off an you'll have to switch it on manually via the switch because it can't handle a high load. This explains the whole story.
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tothergnome

tothergnome

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Mar 27, 2016
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Check if your electricity at your home can handle functioning at high amounts. Try putting lower brightness, that will allow high fps. Also try going as high possible with the fps limiter. Start of with 90 fps, then go higher/lower if it crashes/doesn't crash.
 
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TotalNoobBuilder

Prominent
Mar 5, 2017
9
0
510
The GPU is overclocked out of the box, but I've even tried setting it back to normal clock speeds, to no avail. It seems that once the GPU starts hitting loads of 90-100%, it just shuts down. From what I understand these percentages while gaming are normal and even considered to be good because you're getting the most out of your card, but I cannot find another incident like this where power or temps are the problem.
 
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tothergnome

tothergnome

Respectable
Mar 27, 2016
413
0
2,160
It's something wrong with the power supply, here is why. Once you GPU goes to 90-100% (which again is normal and shouldn't crash your PC) your GPU requires more electricity. HOWEVER, there is not enough electricity to feed it, which explains your problem to why your PSU crashes. It's getting overloaded, and too little electricity means it will turn off an you'll have to switch it on manually via the switch because it can't handle a high load. This explains the whole story.
 
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