Windows 7 No sound from HP DC7900 Ultra Slim desktop

[Lynda]

I installed RC1 on this brand new machine that had Vista on it, and now it has no sound. It seems to think I either have to plug in external speakers of a headset. It has an internal speaker as it made sound in Vista, but W7RC1 does not seem to see the internal speakers.

Any suggestions?

sorry....I solved this one as the Vista driver I found on HP did work.