You need to shutdown the system faster.
To speedup the shutdown of your Windows.
A quick shudown of your Windows is prevented by the running tasks in your memory. Windows tries to quit all tasks for 20 seconds before shutting down. If you don't want to wait this long you can alter the following regkey to speed things up.
First click start -> run -> regedit
Search for the entry "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control"
Locate the key "WaitToKillServiceTimeout".
Normally this key has the value 20000 (20 sec.). You can minimize the value down to 1 (1 milisec.) for real quick systems. But i would suggest a value of 2000 (2 sec.) would be adequate.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.