PC Performance problem, no idea why and what cause it...

sylex1

Distinguished
Feb 26, 2016
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So in the last 3 weeks I had the problems with my graphic card (since 362.00 driver). I tried lot of things, lot of drivers and windows, with not much luck. So today i switched my 970 to my friend's 960 and everything was good. I mean i played games without crashes and with good FPS. He tried my card and it was the same good and much better FPS. I put back the card into my rig and with Aida and etc it was good and no black or blue screen. I tried the Far Cry Primal and i almost started cry when i saw 30 FPS... In my friends rig my card ran it with 60 FPS fix. Some hours later i tried Fallout 4 and i played 2 min with 20 FPS and blue screen comes back again with full froze the pc... What can i do with this low FPS and this blue screen? Why is it so low, while with the 960 was in my PC it was 45+ fps and no blue screens or anything. But when my 970 was in my firends PC that was good too as i said! What can be the problem? Why isn't it good iny RIG?

My rig: Intel® Core™ i7-4790K
Asus Strix GeForce GTX 970 4GB | 361.43 nVidia driver
Asus Z97-Pro Gamer
Corsair Vengeance 16GB 1600Mhz
Windows 8.1 Enterprise 64 bit

Friend's rig: Intel® Core™ i7-920
Gigabyte GTX 960 4GB | 364.47 nVidia driver
Gigabyte GA-x58-USB3
Corsair Vengeance 16GB 1600Mhz
Windows 8.1 Enterprise 64 bit