Upgraded Windows XP to Windows 7 just yesterday, seemed to get through the installation fine, got to the desktop, opened Internet Explorer, all was fine and dandy. I left it alone for a little while, and it went into auto-sleep mode (frustrating, but I'll fix it later), and now when it 'wakes up' the monitor stays in sleep mode! The computer responds when I tap the keyboard (the mouse isn't working either), the power button stops flashing, but there is no reaction from the monitor. I've turned the computer off and back on, no change. Monitor stays in sleep mode. I tried going through the video card and through another port on the computer: no change. Absolutely blank screen. I've turned the monitor on and off, even tried using a separate monitor. Nothing. I'm contemplating swapping out the video card, but I don't think it will change anything. Any suggestions?