Ok I need some help guys. For some reason when windows 7 64bit tries to start up. All I get is a black screen. I have to start it up in safe mode. Delete all the video drivers then restart it and it will finally start up. But it only has vga drivers installed. So I install the nvidia gtx480 drivers and restart the pc and back to the original problem. This started after I hooked up a blueray player and restarted my pc. After that I couldnt get it to start up normally. I have since disconnected the blueray player and I still am having the problem.