Many XP computers come with a CD that contains the software XP needs for sudio, video and other hardware. What is the Brand and Model of yhour computer?
If it is a Dell, go to the dell site at
www.dell.comBut if it is HP goto the HP site at
www.hp.comFor Acer it is
www.acer.comSony also has a web site. So does Toshiba.
On the site, look for
support and
downloads.
Each site has specific instruction on how to download and install.
But...Did something strange happen to your PC? Did you try a program that claims to make it better?
Normally any audio driver should not just disappear.