Windows 7: No information sent to Monitor?

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?

Hi,
I think the real question is 'Monitor won't wake up when coming back from sleep' what graphics card do you have?

When you reboot does the graphics come up OK? Fill out your specs. (Click bottom left of your post)

Could be graphics driver or a bios setting or hibernate problem.

I have an Nvidia GeForce 7300 installed on it, I believe, possibly older. The question isn't waking up from sleep, I mean it is full on out. The graphics DO NOT come up upon rebooting. It went to sleep and the graphics never woke up.

reboot in safe mode (With networking) and download this and install NVIDIA DRIVERS 260.99 WHQL

How do I do that without being able to see anything?

No display in bios? (You need to be more clear)

Remove your graphics card and try the onboard graphics. (If you have one)

There is no display AT ALL. The computer is on, but the monitor stays in sleep mode, which means no information is being sent. And I've plugged two separate monitors into both the graphics card an on-board graphics port. They both react the same way.

I would consider it a motherboard issue then if you have tried more than 1 display.

(How do you know its sleeping and not hibernating?