Computer screen/TV went blank...?

So if it still has power than it should start up and you should hear the sound on startup to let you know that the motherboard is fine. It either is the video chip/card or the memory(RAM) that got fried. Try to take out one ram at a time to see if it is the ram uming you have two ram sticks although if you hear the sound then windows is loading and your memory should be ok. Good luck.