One of my monitors randomly went black one day and I can't figure out why/how to get it back working.
For some reason when I plug it into my graphics card it seems like all power to it turns off (the power button with an orange light is turned on when not plugged into the GPU but when it's plugged into the GPU it turns off).
It seems as if the computer still recognizes it

Any ideas what could be causing it? Is the monitor broken?

Have you tried to change the display cable?

no, I will try this and get back to you. thanks for the suggestion!

did the same thing with a new HDMI cable unfortuantely

Try to cleaning the pin socket both ram or vga socket