No Sound Coming from my computer

Ok So i recently moved my computer from its normal case to another case
every thing whent smooth i turned on the computer and the sound WAS working
so i turned it off and when to sleep

the next morning i wake up and the sound is not working at all i updated the drivers and unistalled and reintalled the
Audio Device (SoundMAX Integrated Digital Audio)

then i whent online and got the newest drivers nothing worked....

so i reinstalled windows XP and still nothin is workin again

the old computer was a Compaq evo Micro-Case 310
the audio device is a SoundMAX Integraded Digital Audio

i dont kno wats going on EVERYthing works like its pose to but no sound is coming out i can play music in Windows Media player but the card is not sendin nothin to my speakers could i have messed it up when i chaged the case?

This is exactly my problem too. Microsoft's trouble shooting center has an answer--buy Windows 7. Am I too suspicious when I suspect XP users are being axed? I've updated my files four times and the sound is still off--no driver available. All the other non MS solutions cost money and I'm loath to pay, since many of them look like scams. Any suggestions?