So, about a day ago, I got up from my pc to go to the kitchen, and come back to find my first monitor screen completely green, and the other monitor completely yellow, so i thought my pc had crashed or something like that so I shut my pc off and turned it back on and now I get absolutely nothing, every time I try to turn the monitors on they say no signal and shut back off, but my pc still boots up as normal, I first thought it was a mother board problem so I bought a new one but i still get the same results, everything within my pc starts as normal, nothing seems to be off, I just want to know what is causing this to happen. Does anyone know what to Do? Any help would be greatly appreciated.