Reinstalled XPS 1330 WINDOWS VISTA.. NO SOUND

Hello,
Not sure if I should have done this by myself, but I reinstalled windows VISTA for my laptop XPS m 1330 and everything seems to be working alright except for my audio. I have read the suggestions such as right click computer and manage, scroll to sound and game controllers, and found 2 high definition adio devices (working properly) so WHAT IS THE PROBLEM? All I want to do is listen to songs, why is it so hard to figure out the problem?