PSU or graphic card problem?

[Rafal_9]

Hi soory for my english and I dont know if it's a correct category but I've got a problem.

My specs:
i5 -2500k non OC
asrock p67 prob3
MSI r9 270x
OCZ StealthXStream 2 600W 80+ SLI
clean win10 (after format)
all components besides SSD drive and GPU are from 2011

My computer restarts everytime when I'm playing games. Sometimes it happens for example in the main menu, sometimes after 10min in case of league of legends. In case of Overwatch it restarts in main menu. The graphic card is the newest component. The temperature of graphic card and CPU is low.

I dont have this problem, when I was rendering movies for 10hours+ or during stress tests, or using AIDA, Prime95 and other benchmarks. It happen only while im playing video games. I dont have possibility to try other GPU or PSU.

Any advices?

 

[MythicalSnake]

What programs are on while you're playing your games? 'Cause I believe that RivaTuner (+MSI afterburner) could make games crash. Especially online ones.

 

[Rafal_9]

Actually only the game. I dont use RivaTuner or afterburner. I've got clean windows and only these two games installed for tests with basic AMD drivers.

 

[MythicalSnake]

Actually only the game. I dont use RivaTuner or afterburner. I've got clean windows and only these two games installed for tests with basic AMD drivers.

But how did you know that the temps of the GPU and CPU were low?

 

[Rafal_9]

Before formatting hard drive I was using speedfan for checking those temperatures and they were low, so I dont think its overheating problem.

 

[MythicalSnake]

Hm... okay.. But you experience the crashing only when you're in fullscreen?
Because I don't think that those benchmarks were, but the games most likely were in fullscreen.