I just installed my brand new MSI AMD 5700 XT Gaming X with the latest software 20.4.2 running on a brand new corsair PSU 850W. WHILE browsing, the screen went black all of sudden while everything else was running with no issues and nothing turned off. The monitor was on as well but the screen was black. I unplugged the graphics card cable then plugged back in & the screen came back normally. The CPU & GPU temps were normal and within range. I DID NOT EVEN HAVE THE CHANCE TO GAME YET! What is this nonsense? It never happened to me when I had NVIDIA before this. I paid so much money for it. I JUST GOT IT!!
What PSU do you have?
Did you try uninstalling previous drivers with DDU?
But, yeah man, we all have this problem on this subforum here and we're trying to get some solution.