Title says it all. Sometimes I'll leave like a GB download running, and I'll come back after like an hour or so, and my display will be black, and pressing buttons, moving the mouse, or anything like that doesn't bring it back on. In fact, the only way I can get it to come on is to press and hold the power button on my case, which I don't like doing. So if anyone could give me some help, I'd really appreciate it. This is the only issue I'm having with my computer.