Sounds like driver issues allright. Did you down load Vista drivers or are you trying to force the win7 drivers to load into vista
If you go to ASUStek web site ( http://support.asus.com/download/download.aspx?SLanguage=en-us) and enter you model they may have drivers posted for Vista.
If not, you can try finding them by component,but you will need to know a lot more about the specific video, audio, nic, chipset and any other options in the laptop than most folks know. If you don't find the drivers you need at the link above, come on back and we can try to piece together what you need.