Have been having problems with my GPU for about 4 months with backscreen when ever I put an app un full screen. the weird thing is that it just happens when in Fullscreen when ever I go to another page or something the screen goes back on. first I thought it could be underpower from the PSU but after a change it was not the PSU. after that I tried everything from the DP cable to the monitor (I have 2 and it happened on both) and the drivers and bios updated but nothing changed.