If the Audya is using a driver that needed to be installed on the PC....keep in mind ..if you are using Windows XP..it can only run a limited number of drivers..
Even if it appeared the driver installed, if XP, exceeded the number it will not work..

This may be why one of Frank's PC didn't work..

I have found this from experience..and had to uninstall some drivers I no longer needed before the PC driver worked..