Can't resume Windows after sleep

[pkryder]

Hi guys this issue seems to have been done to death but I've tried all sorts of tips I've found without success.

The issue is this the PC goes to sleep fine however when I try to turn it back on my moving the mouse, tapping the keyboard or pressing the power button the PC powers up but the monitor does not get signal, the mouse and keyboard either don't light up or do so briefly before going off again. Sometimes if I wait a while and press reset on the case the PC will come on, sometimes it does not.

I usually have to hard power off and reboot the PC then tries to resume but gets stuck on the "Resuming Windows" screen, I then have to power off again I am then able to reboot by deleting the resume information.

I've tried disconnecting my usb devices except mouse and keyboard (I have a galaxy tab and HTC Desire), I reset my bios to its defaults, I upgraded my bios, I've reinstalled Windows, I set a HDD delay of a few seconds in the bios, I checked that bios says to use S3 and not S1 (not that I know the difference just that I'm told should use S3), I disabled hybrid sleep and checked hibernate is not enabled.

I'm out of ideas can anyone help?

My setup is
Windows 7 64bit Ultimate
Gigabyte GA-X58A-UD7 MB
i7 960
Corsair XMS3 6GB (3x2GB) DDR3 PC3-16000C9 2000MHz
OCZ Agility 3 120GB 2.5" SATA-3
Creative X-fi Titanium HD
Sapphire Dual Fan 6970
+ 4 Sata HDDs and DVD writer

 

[Anon-e-mouse]

One of the things that worked for me for a short while was to goto Device Manager, and open the USB Connections tree, click on each USB hub, and turn OFF, "Allow windows to turn off power to this device", on the Power management tab.

However after a couple times where sleep worked fine.. it fell over again on Saturday, and failed to wake up from a sleep session.

But I've also done a lot of what you listed, including new drivers for the keyboard (a G15), new Video Card drivers (Radeon HD5770), Flashed a new BIOS (Asus M4A785T), played about with the BIOS settings (which didn't work), reseated the RAM, Removed some drivers (HTC Sync for the HTC Sensation).

And still the PC will just refuse to wake up properly. Fans come on, HD's spin up (and are available on the network for file access, like playing an avi from them). But no amount of keyboard bashing or mouse waving/banging will bring the video back.

If I power off, and back on again, it appears that Windoze resumes back to it's dead state (fans running, HD's spinning and available on network, but no video power). Eventually after several power off/on cycles the machine will hit POST, and start windoze normally, and from then on it's fine until it sleeps again.

I would love to know what's causing this.