My PC was just on with nothing running. Just the desktop was visible. All of the sudden the screen went black. I turned it off and then back on again. When it used to boot up it would show the memory, drives, etc check. Now it only shows one line of text. It say Copyright Intell 99-00 and that's it. It will not even finish checking anything else and everything is unresponsive. Any ideas? How can I tell if the hard drive crashed, memory, or possible motherboard. I have to get this thing up and going soon for classes.