If you experience problems with sound after you install Windows Vista Service Pack 1 and any other Windows updates, this post is for you. I am experiencing issues with by Audio drivers every time I install Windows updates. This is really annoying. 
If you experience the same problem, please checkout this KB article from Microsoft.
http://support.microsoft.com/kb/948481
‘Method 5: Reload the current sound driver’ helped me resolve the issue.
Still not sure why this happening every time I install Windows Update. If you know what is causing this please share!
I will keep you updated if I find the root cause and a better solution than reinstalling your Audio drivers every time you install ‘Updates’.
Posted by Video X Drivers » Issues with Audio Driver after installing Vista Updates on August 18, 2008 at 2:45 pm
[...] unknown: If you experience problems with sound after you install Windows Vista Service Pack 1 and any other Windows updates, this post is for you. I am experiencing issues with by Audio drivers every time I install Windows updates. … [...]
Posted by Topic Drivers » Issues with Audio Driver after installing Vista Updates on August 19, 2008 at 2:12 am
[...] unknown: [...]
Posted by Kudzai on January 24, 2009 at 7:54 am
Yeah had this same issue too and re-loaded my driver. But now everytime I do a windows update, I have to reload my driver too
Something’s amiss. Also.. sometimes my audio just decides to stop playing, and I have to restart to get it kicking again. Help