When I shut down Windows 7 x64 Pro, windows shut downs normally, power to screen turns off, but power to PC stays on, fans run. I have to force complete shut down by holding in the power button.
This issue is sporatic. Sometimes the PC shuts down completely, other times it does as described above. This issue started ocurring AFTER I installed a Crucail M4 SSD with a clean Windows 7 install. No other hardware changes.
Research lead me to changing the IEEE Power Managment to "Allow the computer to turn off this device to save power." This solution did not work for me.