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10 Dec 2009  

Windows 7 Pro x64 (1), Win7 Pro X64 (2)

Try going to Device Manager, and for the various devices you find whose Properties contain the "Power Management" tab, UN-CHECK the option on that tab which "allows windows to power off the device to save power".

You might find this on a sound card (e.g. M-audio) or IEEE 1394 controller or LAN network adapter or USB Root Hub device, etc.

In my case, UN-CHECKING this option on my eight USB Root Hub devices did the trick. Windows now shuts down normally.

This could be a Win7 bug, or it might be a BIOS setting that should be changed to be compatible with Win7. But I never had a problem with WinXP Pro... only Win7 Pro.

Anyway, UN-CHECKING for my USB Root Hub devices eliminated the problem for me.

My System SpecsSystem Spec