PC random crashes while gpu at 75-80 degreese

[Kingston514]

Hello everyone.

I have a problem with my pc. While playing GPU intensive games like shadow of mordor, bf4 etc.,and after 10 min i can see a still image for a few seconds and everytime it looks different (white boxes on screen, white lines, pink boxes), then my gpu fans go to max, my screen displays no signal and then the pc restarts or shuts down.
First i thout it was the PSU. After changing it the problem persists.
I ran a memtest86 for about 30 hours, first with dual sticks, then one at a time with no errors. I tried prime95 to stress test the CPU overnight and still nothing. The interesting thing is i ran furmark for about 5 hours, the GPU temp maxed at 80 but it was running fine so i have no idea what it could be. The only culprit aside from the gpu would be the motherboard. Did anyone have a similar problem?

my pc specs:
Core i5-4670
corsair DDR3 Vengance 2x4GB ram 1600Mhz
Asrock H87M Pro4
Geforce gtx 780 Gainward phantom GLH edition
corsair psu 750w bronze

 

[jaimelmiel]

What are your cpu temps while gaming? What percent are your gpu fans at while gamming?

 

[Kingston514]

my cpu temps are around 60-65 degrese.
My gpu fans are around 60% but they do incresse if the GPU gets hotter.

 

[jaimelmiel]

Sounds like a video problem.

 

[Kingston514]

i installed msi afterburner and manualy set the fans at 100% all the time. My temps dont go over 70 degreese while gaming wich means no more crashes.
You are right. I will RMA the card and post back.

Thank you for your kind reply jaimelmiel

 

[Kingston514]

Edit:

After replacing my gtx 780 with 750ti there is no more problem. But i wonder. I had a simmilar problem in the past and it turned out that the motherboard was the problem. Guess i will see. Will return the card and see if they can figure it out.