Faster Shutdown – Windows 7

Solution for a slower shutdown:

Goto run and type regedit.

Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control.

Find the WaitToKillServiceTimeout key on the right, double-click to edit and change it from the default 12000 (12 seconds) to 2000 (2 seconds) or above.

This setting tells Windows how long to wait before prompting you that a service is not responding to the shut down request. This may help speed up your shutdown if you have any such services running.