Windows won't shut down!

I'm working on a Toshiba 1805-s254 laptop that won't shut down normally. I have to use the power button. I have no virus, mal or adware. I been through the registry and don't see anything off hand that is suspicious as well as using a registry cleaner. I have heard that service pack 3 might have something to do with it but I haven't got to the point of uninstalling it yet. Any suggestions?

 

It just hangs forever if left alone...

 

Am I reading correctly that a registry cleaner had been used? If so, maybe something got tossed that didn't need to be. If nothing else, might try System Restore.

 

I had the same problem with Vista Premium. The shut down problem was caused by Norton 360. Since I did not want to ditch the newly bought program, I shut down first Norton before shutting down my PC (with Zone alarm I disconnect from the internet before shutting down Norton).

 

activate verbose ( http://support.microsoft.com/kb/906485 ) and post again telling us on which specific step is stopping

I`ve encountered several system that were having this problem and most of the time the message was "closing network connection" ... and this happened after everything worked fine with several restarts / shutdowns

as far as i saw the problem was ( in my case ) that the systems where prepared for a remote location and the system was trying to close some network connections and because before the "last shutdown" their IP was set for the remote connections, they couldn`t get to domain controllers or ... other system to close the connections

one way i`ve "solved" was pushing very shortly the power button which in 3-10 seconds was launching a forced shutdown.... this works on 80% of systems ( happened to more than 30 for me ... )