My sound used to be really loud.  Now it is quiet and I have all the volume settings both on windows and on the actual speakers turned up to max (I used to be able to get louder sound with everything turned to half).

Not sure if some program could have changed some hidden setting, but this is driving me crazy.  I like to have my music played loud.

I have a Dell XPS420 with Vista, it has the SigmaTel High Definition Audio, and I have 4.1 Altec Lansing speakers.

Any help would be greatly appreciated.