GTX 780 problem

[gurra321]

Hello i have a problem with what i assume is my gpu, it started 3 days ago where i got frame drops and suddenly my screens just froze in one solid color and then i had to restart. Then yesterday my second screen didnt work and my main screen ran at 64hz insted of its normal 144hz, and i cant change resolution or anything. I have tried to update nvidia gpu drivers windows updates. When i try to install the nvidia its goes to install them then wants to restart and after the restart im back at the same install screen again.

 

My specs:

Intel I7 4790k 4,0 Ghz

Nvidia GTX 780

Asus motherboard(cant remember model atm.)

16gb of hyperx ram

750Watt psu

 

I have talked with the nvidia support and they told me to take out the gpu wait 60 seconds and reinsert it. That havent worked, ive tried another gpu and same thing happens.

 

-Gustav/KenGurra