Windows 7 - media smart server update corrupted media center

I have 4 computers all running windows 7-3 in 32 and 1 in 64. All were working fine and no issues with my mediasmart 470 server. I only have one computer with console running. The other day pp3 came out and has made a mess of my computer that has connector to server. It seems to have corrupted media center so that the tv does not work. I went back and recovered to previous vista install. It uploaded right away and tv would not work in vista. When I upgraded last night back to windows 7..I still cant get tv to work in media center. It won't let me install drivers. I keep getting error that some of the services stopped working and to restart program and services, but will not work. I tried removing drivers and reinstalling, but still does not work. Is there a way to remove pp3 or a fix so that I can get tv to work on computer. The other computers have not been affected since they do not have the connection set up. All computers can access the server with no problem.

If possible do a clean install after ensuring you have backed up all important files on your PC and I also suggest running the Windows 7 Upgrade Advisor.