I got a new Graphics card last week (RX 460) and Ive been using it fine up until yesterday when I tried to play Overwatch, I was playing for about 2 minutes and it black screened, I alt-tabbed and I was able to see the taskbar so I closed it using cmd. This happens with other games aswell such as csgo, Farcry 4 and probably alot more but I doubt any would work. I monitored the temps and my graphics card peaks at 50 Degrees and CPU peaks at 58