Due to endless headaches, I recently took my Inspiron 531 from Windows Vista to Windows XP.  Now, I cannot get any sound whatsoever from my system.

Device manager shows an entry under System Devices labelled Microsoft UUA Bus Driver for High Definition Audio with a yellow circle and black exclamation point, and an entry labelled Other Devices  and subentry of Unknown Device,with Yellow question marks that I assume are the culprits.

Anny suggestions?

Thanx,

Buddha