i have an RTX 2060. i got it a few months ago.but now the pc crashes after running for a while. The display goes to power saving mode and doesnt come back. i have to turn it off then back on but the problem still continues. this went on for a short while untill the display wouldnt even turn on at all with the gpu in. the pc turns on but not the display. at the moment i am using my cpu for my display. any ideas?