1) Start - Run - Regedit
Navigate to the following Registry key:
HKEY CURRENT USERControl PanelDesktop
Double click on the AutoEndTasks entry and replace the 0 with a 1 in the Value data text box
For the next two, if the dword value indicated does not exist, create it:
Double click on the WaitToKillAppTimeout entry in the right pane and change the Value data to 2000
Double click on the HungAppTimeout entry in the right pane and change the Value data to 1000
Reboot
If still having a problem, make the next change:
2) HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControl
Right-click on WaitToKillServiceTimeout and change it to 2000

NOTE: The lowest value Windows will recognize is 1000 (1 second)