XP Pro, sound stopped working shortly after installing new AGP card. The motherboard is ASUS K8E-N Deluxe with onboard sound. I've reinstalled the drivers several times, both the ones that came on the CD and also the newest ones on the web site. The sound card shows up in device manager and appears to be working properly; there are no devices that show an X or an exclamation point. But when I go into Sounds and Audio Device Properties, the volume control is grayed out, and everything under the audio and voice tabs are grayed out. When I run DXDIAG, it says "No sound card was found...". I talked with ASUS and they sent me a new motherboard, but that did not fix the problem. I tried a pci sound card, but it caused a blue screen. I reinstalled SP2, but that did not resolve my problem. For some reason, I now have only two previous restore points, both from this week and since my problem appeared.
I'm fairly convinced it is some type of a registry problem. The only thing that seems to have resolved this problem for others is a reinstall, which I really don't want to do. If anyone has seen this before, I would appreciate it if you could point me in the right direction. But please don't suggest that I reinstall the drivers, because I've done that over and over with old and new drivers.
Thanks for any help.