it worked perfect until I unplugged since I was away for a while. Now when I turn it on the video doesnt display. There are some error codes in the top CPU are a 31 and a couple others. I tried pressing the red reset button in side near the power supply.. Nothing. The lights all come up on the machine, but it doesnt seem to be Booting up. Is there something I can do to get it to boot up some other kind of reset. HELP ME