Hello I recently built my pc and the monitor I bought with it I have problems with and not sure what is causing it. When I first put it together it would randomly black screen and I wouldnt be able to get any signal back without restarting the pc. I then thought it was a problem with my hardware so I sent back the gpu, mobo, and psu only to have the same problem with brand new parts. I ended up buying a displayport cable and trying that also and was getting the exact same problem and then since I had two cables now it allowed me to hook up my tv also and once I had 2 monitors going I never had the crash again. Over a month later I had no problems was able to switch outputs on the tv to play my xbox and everything with no problems. So recently I upgraded my tv to a actual gaming monitor and when I change the output on it it acts like its not hooked up to the pc anymore so when I went to play my xbox again it forced the original monitor to be the main one again and after a short time the pc black screened again.