When I installed Vista on my TR3AP1 I had the same problems. I couldnt get messenger to work and I couldnt get it to shut down. Instead of shutting down, a blue screen with an error message appeared and it restarted.
I thought this may be something to do with the drivers as it only happened when I installed them. I needed to install these to get the sound to work.
If you reinstall vista and dont install drivers, it should work fine. But that means you may miss things like me…... NO SOUND!! Very annoying, but my vaios working at the moment.
If anyone knows what I should do, please tell me!!! It lets me install the adi soundmax drivers but nothing happens after restarting it