did I do something wrong when upgrading or did I get a faulty GPU?

[xvsanx]

AMD FX-8320 8 Core CPU (just upgraded from an older AMD FX)
EVGA 2 Gb Nvidia Geforce Gtx 760 (just upgraded from an older AMD card)
Asus M5a78L-M LX PLUS Mobo
4gb DDR3 Ram
Windows 7

mycreen tears and goes black as driver crashes and recovers 2 seconds later. I've tried 334.89 and 331.93 nvidia drivers but nothing seems to work. I uninstalled my old drivers, booted into safe mode, used driver sweeper and all that before installing any nvidia drivers. then I installed with geforce experience, which was crashing as well, so I recently reinstalled that but nothing seems to be working. please help! I just upgraded a few days ago and am eager to try out this bad boy on ac4.

also it's worth mentioning that I upgraded the CPU and GPU BECAUSE I was crashing trying to play certain games with that GPU as well, so maybe it's something else like the mobo or power?

 

[clutchc]

you may have a software conflict. And/or registry errors causing issues. First, give CCleaner a run. Have it do the Clean and Registry portions both.
https://www.piriform.com/ccleaner

Next, disable as many items in your tray as possible when gaming. Too many TSRs running in the background when you try to stress the system with gaming, can cause problems. Also... Check your System Configuration/Start Up to see how many boxes are checked. If it is over 6-10, that is too many.

 

[xvsanx]

did a clean install in safe mode, ran ccleaner, no signs of amd anything from previous card, updated directx, updated physx, tried different drivers, underclocked my gpu, set cpu at stock clocks, went straight dvi to dvi connection, reset monitor settings, none of that helped, had to up my gpu voltage to 1212 and now the artifacts are gone

but no matter what I do I'm getting screen tearing in game (WOW), Ive tried all different combinations of vsync on/off in game and in nvidia and it just gets worse and worse, do i have a bad card? maybe my monitors too old?

 

[clutchc]

If the problem is just screen tearing now, set vsync to 'adaptive' in the NCP. If you still have screen tearing in EVERY game, go to control panel/display/screen resolution/advanced settings/monitor and be sure you refresh rate is set at 60 hz.

Btw, when you ran driver sweeper, did you remove ALL gfx driver remnants; Nvidia, AMD, ATI?