I notice artifacts every day and they come and go but most of the time they're not there, but I never see any artifacts in-game.
So I started getting bsod's and the error read "THREAD_STUCK_IN_DEVICE_DRIVER" and I googled it and apparently it's a my gpu and so I took it out of my case and hooked up my monitor to my motherboard instead of the gpu-ports.
The result, no more artifacts and so far, at least for the 2 hours I've been testing this with constant video-playback, it hasn't even crashed once, unlike my gpu that I took out, it even crashes on simple things like videos sometimes, annoying.
So, does this mean that it's my gpu? It doesn't look damaged and it's only 2 years old.
My specs;
CPU: i5-4960k @ 3.5GHz
PSU: EVGA G2 750W 80+ Gold (or maybe it was bronze, idk)
GPU: Sapphire Radeon R9 390X 8GB
RAM: 2x4GB Corsair Vengeance 1866Mhz DDR3
MOBO: Asus Z97-A
更新1:
I forgot to mention, when I bought the computer it was missing screws on the mobo and psu. This makes me suspicious of the seller because I might just have been scammed for all I know.