Hi, last night I watched Shudder Island (Good Movie), after it was finished I got up, exited the movie, turned the speakers off, shut-off the monitor, and went to sleep. When I awoke the tower was shut-off (My sister turned it off), I turned it back on only to find out that my mouse, and my key-board arent getting any power to them (The lights are off), I know the USB ports are fine, because my Turtlebeach headset gets power to it from all the USB ports. I cannot log-in to my computer, nor can I see anything, because the monitor stays black. My computer is a HP, 32-bit Vista, and desktop. PLEASE HELP.