Here is another registry tweak which useful to speed up Windows shutdown. To do so, click the Start button > Run > and type “regedit.exe”. Browse this key:

HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control

Click on the Control folder and in the right hand window you will see this key “WaitToKillServiceTimeout”. Double click that key and set it to 200.

Close regedit.exe and then restart your computer.

Stumble it!