here the steps if you get alow or cancle or program stop:FOR VISTA ONLY!
OKAY
Step 1:Press Menu Icon
Step 2:Click on Control panel
Step 3:Then click user account and familay saftey
Step 4: CLick user account
Step 5: Click on the bottme were it sey Turn contrl user on or off click that then untick(un check) the box save then restart computer now
There you have it.
Thank me if this help