Sound driver for a Sony Vaio PCV-7752 Desktop?

I’ve probably spent the last 3 hours looking for this driver and I can’t find it. Saty’s site doesn’t have the correct driver and googling hasn’t help. I used Unknown devices to identity the audio driver manufacturing and its called SIS7012 Audio Driver. But this doesn’t work either. I’m not sure what else to try. Any help would be great?