audiophile

hi peoples

i have installed my media centre for the 3rd time in a month. Due to various issues. (1 being sleep) Now i have installed the same drivers as the first build for HDMI audio and video, which i had perfect dvd playback and tv on, however i am faced with errors about video drivers not properly installed.

Last time it was the HDMI driver which i have installed and reinstalled 3 times. It seems every time i follow the exact same process at rebuilding vista 64 i get a different result.

Is there a way you can reset media centre so it checks the drivers all over again. I am interested in resetting audio and video if possible