Weird PC shutdown when pushing my PC to the limit

Modey2222

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May 19, 2014
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Hello guys
i have a weird problem my PC shuts down under heavy load (Gaming) but there's no overheating issues with me .i stressed my CPU and its fine but my GPU Stress test doesn't complete it shuts down the PC i read alot of issues like this with others but there is no straight answer i know the problem lies in one of these (Power Supply - GPU - Motherboard) so if there is anything that can help me determine which part is the problem please share it.

Specs
Cpu: INTEL Core i7 4770K
Cpu Cooler: Corsar 100i hydro series
Motherboard: Gigabyte G.1 Sniper 5
GPU: Nvidia GTX 780
PSU: Corsair CX750
SSd Adata XPG 910


i tried valley benchmark again and i monitored it with MSI Afterburner the benchmark draw 100% power of the GPU and it was fine but somewhere in the benchmark it draw 84% power then it happened again now i'm confused is it the GPU or PSU?. and there wasn't any overheating max 75 degree please guys any help.

the interesting part is i can play some games that doesn't take much resources from my GPU and PSU like League of Legends, Dota 2, And some Assassin's Creed games without any problem and the PC runs normally but in case of high end games that requires more power from the GPU and PSU it shuts down.

one more thing when the PC shuts down it goes back up again all on its on.

Sorry i revived a thread because no one answered me before i'm trying to update my thread as soon as i can find anything new.
Thanks in advance.

the old thread

http://www.tomshardware.com/answers/id-3243962/asap-pls.html
 

Modey2222

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May 19, 2014
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if i had money i would have done it i want to be certain which part is at fault because my budget is limited to 1 part max
 

Modey2222

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May 19, 2014
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That is a very useful post thank you
 


You don't have to buy a new one. You can just borrow one from a friend for a day or you can get your system to a repair shop and have them check the PSU for you. That way you don't risk buying a part you don't really need. That said this specific PSU is notorious for not being a good unit and its capacitors age prematurely. So you may have to replace it some time in the future.
 

Modey2222

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May 19, 2014
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yeah since that post and i'm thinking of replacing it anyway with Seasonic M12II 620W EVO or Cooler Master V750 Semi-Modular if the budget allowed me
and about borrowing a PSU it's not possible but i will take my GPU to someone that can do a stress test to it.
thank you for everything you have done for me this far and when i'm done i will share the results maybe it will help someone else.
 

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