Avro Arrow said:
It's very simple actually because it happened to me. Go into the device manager and re-install the drivers for your RealTek Audio (or whatever your onboard sound is). ATi's rear HD Audio Output drivers sometimes disable the normal on-board drivers. All you have to do is right click on the sound device, select "update drivers" and have it search automatically. It will find them because you already have the drivers there, they're just disabled. Then you'll get your sound back. I had the same problem when I installed each of my HD 4870's and the HD 3450 in my HTPC.
OK, she somehow got her recovery CD to work.
I sent her what you said to do about the realtek sound and she said she tried it but it still didn't work. I'm going over there later today to try playing around with some stuff.
She said her sound still wasn't working after she did a clean install. Is there anything else it could be?