I have an alienware area 51 R2, and I upgraded the GPU to a GTX 1080 2 years ago. Normally my pc can take power outages, but after this last one when I tried to turn it on again the case LEDs would come on, I could hear the fans running and GPU lit up but my monitors would say No Signal. I tried to replug everything in to the components but no luck. I even went as far as to try gpu in another pc and it works so I know the gpu is no the problem. What component could it be?