AWAC

The sound on all the Vista (Home Premium) pre-loaded games worked. Now
although the games work, i cannot get the sound to work. I have one other
game loaded into the standard Vista games folder - Rush For Berlin - and that
works perfectly. I have tried disabling the sound to each pre-loaded game,
saving and restarting the computer (Sony Viao VGN-FZ11Z which is 3 weeks
old!) to no avail.

All other sounds work pefectly (e.g. music at start up, bleeps and stuff,
etc) and I have no problems with sound via DVDs.

Very puzzling - but how can I get the sounds back? Can anyone help please.