If your system is rebooting when shutting down, you might be actually
crashing on shut down. Check your System Event viewer and see if you are
recording any crash dumps. Also, Right-Click My Computer, go to
Properties, and the the Advanced tab. Then go to Startup and Recovery
options and ensure that "Automatically restart" is not set under "System
Failure".
If you do get a blue screen, please post all the information the shows up
on the screen and post it in this thread.
- Bill Curtis [MSFT]
“This posting is provided "AS IS" with no warranties, and confers no
rights.”