I have that identical motherboard and my built in sound card is a realtek, not via. Are you sure you have the correct drivers installed. Check here and make sure we're talking about the same MoBo ASRock > Products > G31M-S
before i install Win7 i was using the Yamaha Synthesizer but before that i was using VIA HD VT1708S in XP SP3.
also, it's run properly in Vista.
yesterday i download the sound drivers for win7 in motherboard website, in the file there were Realtek and
via both told me there are not compatible devices.
today i have installed 7 RC and Vista
both are detected my sound cards same as 7.
now what should i do ?
i'm now in XP, the VIA has disappeared!!!
does it because i have putting an external Sound card ????