Very very strange indeed...
The problem remained when I moved from win7 RC to win7 RTM...
There were no new bios updates available for the P5K motherboard, so I had to change my motherboard to solve the issue...
I guess it's a motherboard model issue...
Try this which a friend passed to me.
Click “Start”, on “Computer” click right mouse button and select “Properties”, click “Device Manager”, select “IEEE 1394 Bus Host Controllers” group, only contains one device called “VIA 1394 OHCI Compilant Host COntroller” on that click right mouse button and select “Properties”, select “Power Management” tab, and finally check the “Allow the computer to turn off this device to save power” box!
I went to device manager and under the group "IEEE 1394" There are two devices:
"VIA 1394 OHCI Host Controller Compilant"
"LSI 1394 OHCI Host Controller Compilant"
I made the right button on "VIA 1394 OHCI Host Controller Compilant" but the Power Management tab is not present.
Saw a series of solutions for this problem (including mine) on another site. This may solve your problem as well.
In Device Manager, a number of devices may show the "Power Management" tab with the "allow the computer to turn off this device to save power" box checked. Some machines have this tab on certain devices, and others do not.
===> If Power Management tab is present, UN-CHECK the "allow computer to turn off this device to save power" option.
In particular, I saw this same recommendation for (1) M-audio sound card, (2) IEEE 1394 controller, either built-in or on other hardware such as Creative Audigy sound cards, (3) LAN network adapter, and (4) USB Root Hub... which was my own particular solution (I have eight of these on my motherboard, and I un-checked the power save option on all eight).
Once these power save options were un-checked (just un-checking the USB ones, for me, did the trick... leaving the LAN network adapter one checked) lo and behold Win7 Pro 64-bit would now shut down normally.
I'm guessing in my case it was the unused USB Root Hub devices that had gotten "powered down" and were not getting "powered up" by the Win7 shutdown process so that the machine could truly be powered off. I don't think my LAN network adapter would ever enter that "powered down" state.
Obviously this is a Win7 bug, and hopefully it will be fixed by MS eventually.
Or, it may be tied to BIOS settings. I certainly have not changed any default Power Management settings for my SuperMicro C2SBX board, but it shuts down fine under WinXP Pro. Just not under Win7... until I un-checked the options on all my USB Root Hub devices as described above.
YMMV.
Hello,
Just adding that this fix works on an Asus P5KC. Although as an addendum, make sure that if you are using power saving settings you disable usb suspend, otherwise it will reset the usb power save settings in the device manager.
control panel -> power options -> change plan settings -> change advanced power settings -> USB Settings -> USB selective suspend setting -> Disabled.
Cheers.
Running Win7 Home Premium X64 Build 7600 - had similar shutdown problems, including hang on "Windows shutting down" screen. Traced it all back to a bad driver (in my case I had recently installed Virtual Clonedrive, a CD/DVD emulator). After removing that program, everything is back to normal.
If shutdown has never worked properly for you, I suggest a clean install.
If the problem began recently I suggest you boot into Safe Mode and try shutdown from there. If it works properly from there, you most likely have a hanging driver or service.
To diagnose in normal mode, boot normally then stop all programs you can that run on the toolbar and try shutdown. If it still fails, repeat using Task Manager to stop background programs that auto-start, and finally check Services that start automatically.
I have found Reveo Uninstaller to be handy for diagnosing recently-introduced problems. Sort the installed program list by most recent install date then start down the list removing a program, trying shutdown, and repeating until you fix the problem or run out of programs to remove.
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