Monitor keeps going black

Have you tried changing the monitor resolution and refresh rate?

So if its on a TV, its fine without any issues?

Hello Aramon T! I'm Kris and I'd be happy to help you with your question.

What device are you playing on?

One thing you could try is putting the console into low res mode and see if it happens then. You can do this by doing the following, starting with the console powered fully off.

Press and hold the Power button and the pair button until you hear a beep to turn on the console. You'll hear one beep right away and a second beep 10 seconds later. The power light will flash on before the second beep. Don’t let go until you hear the second beep or see the console start-up in low resolution mode (the Xbox start-up screen will appear slightly pixelated).

Well when I last used my tv which was over a year ago, problems can as soon as I used the monitor