No sound on the m6vsb

Question

I did a clean install everything went okay except the soundWindows see's the sound joystick and video in the device manager but when i go to control panel - sound and audio devices everything is grayI downloaded the stac97 on the biostar website but eveytime when i'm installing the software it says '' device object not found, restart the system and run setup again '' so i've done that but it was still saying the same sentenceBefore i did a clean install the sound was working perfectly so i don't know what the problem isI also checked the bios for the onboard audio and it's enabled so i coulnd't solve the problem