I just installed Windows 7 (64 bit) on a fresh system last night. Installation was fine, did a little web browsing, then put the machine to sleep. This morning, I go to the computer, click the mouse, and...nothing. Press a bunch of keys, nothing. Cutting power to the machine causes it to power up, power down, then power back up. And I have no idea what's going on. I'd love to change settings, but I can't get any output from my machine!