Games alt tab on its own constantly

Every game i try to run on my main monitor, it black screens and alt tabs (I think) and keeps doing that. The game starts but it just black screens, goes back to game, black screens, goes back to game, black screens... etc. This happens right on the start of the game and it happens on any game I try to run fullscreen on my main monitor. The side monitor works perfectly fine for gaming. How do I fix this?

Submitted May 30, 2017 at 06:34AM by InsomniacAlways http://ift.tt/2qvVR9d