I recently recieved my new PC and I have a problem. I'm using a HKC LED Monitor but there's nothing showing up on it. I'm using a DVI-VGA adapter to plug into the graphic card port but there's no picture on the monitor, it worked fine with my old PC. I also read that I shouldn't turn off the PC until I've finished the startup process but I turned it on and can't get to that part so I'm pretty worried about turning my PC back off.. What should I do?