After a few Windows update I was encountering a very annoying feature that I picked up.
When my PC was docked in the network and tried to hibernate or logoff. Frequently I noticed that the logoff or hibernation process did not complete.
The PC ended with the disks spinning and a black screen. Making me to brute force the shutdown ?
After nosing in the event viewer I noticed an event ID 1014
After googling a bit I found an article that referred to this one, and claimed that it would solve this very same isseu
Run the following command in an elevated command prompt in Windows 7:
netsh interface tcp set global rss=disabled
netsh interface tcp set global autotuninglevel=disabled
netsh int ip set global taskoffload=disabled
If the above does not work you can try this one : http://support.microsoft.com/kb/953367/en-us
I also experienced closing Skype before Hibernating was helping a lot ?
So I gave it a try and indeed it was gone ! struggled with this for a few months