I have to do a hard shut down just to get back to game mode. I just don't understand, all I did was

I have to do a hard shut down just to get back to game mode. I just don't understand, all I did was plug into a dock, unplugged it after a bit, the desktop started messing up, dealt with it for a while, plugged my Go into the TV, changed the resolution to where it wasn't in 4K, now I have no external display whatsoever.
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