Solved it, I went into the little box in the bottom right corner of the monitor for adjusting monitor settings and changed Input Source from DP to HDMI 1. [IMAGE]
I have a Aurora R12 paired with a Alienware AW2521HFL 25” monitor, randomly starting today, the screen would just stay pitch black. I could see my mouse still, and when I power off and on again, it’s still the same. I have also checked the contrast to make sure my screen brightness was not cranked down (not sure why it would have been though). I have tried plugging things in and out again with no avail. I need answers, please. 
AW2521HFL, shows a black screen when powered on