Okay, so I just got really fed up with Windows Vista and how it was killing my computer, so I downgraded to Windows XP and lost everything...including my sound. I've already tried Windows Update, and it says I'm up-to-date on everything. I've tried going to my computer's website to download the drivers for my specific computer, but they all want me to be running Vista in order for me to use them. I'm not sure I can find a sound device using Everest, but I do have a "PCI Device" with a yellow question mark next to it in the Device Manager...but it won't update or reinstall the driver when I try.
I can't seem to find anything that screams "this is the type of sound card you have" to me, and yes, sound has worked on this computer in the past.
I'm running an HP m8100n Media Center PC, on Windows XP with the latest service pack.
And I would really appreciate your help.