Sometine it takes ages before windows shuts down.
This tweak will help you for a faster shutdown :D
Step 1:
Open your start menu en click on 'Run' for the dutch people this is 'uitvoeren' and typ regedit and click ok.
Before the next step you go to file > inport to make a backup !
Step 2:
Now search for: HKEY_LOCAL_MACHINE\SYSTEM\CurentControlSet\Control
Step 3:
On the right you will see 'Waitokillservice' Double click it and change the 20000 to 200 or something BUT don't go lower then 200 !!
Step 4:
Than you go to 'HKEY_CURRENT_USER\Control Panel\Desktop'
And on the right you change this;
AutoEndTasks : 0
HungAppTimeout : 100
WaitToKillAppTimeout : 100
Thats it! Your system will shutdown faster !
I hope it worked.