and what's it's status? Is your sound on board or an add in card. If an add in card, it could be as simple as moving it to another slot. As well, was your previous graphics device on the MB? You'll want to check BIOS settings if you do have on board video or audio devices as well. More hardware information would be helpful.
OK, so, I have a compaq presario SR1950NX series with an AMD ATHLON 64 processor, in which i just installed a new graphics card, HD ATI RADEON 4670. When I installed the card into the computer, all of the sound was instantly gone!! I have tried everything to get it back but I feel like there is no hope left anymore. I have been scavenging the internet for help but I can never get anything. Is there anyone out there who can solve my problem???!!!??? I WANT SOUND!! ^_^ please help me thank you.