i'm using vista ultimate, i unistalled the driver (nvidia) to try another drivers. aero wasn't working with the beta drivers so i unistalled them and installed the old drivers back and aero still not working. i thied the user stop uxsms and start, with no luck. redidit to change the composition to 1 and compositionpolicy to 2 no luck. what else can i do, aero theme is not there anymore all i get is vista classic.