Acer 5330 Intel(R) high definition audio hdmi

Hello people,

I have this problem that i was hoping somebody out there could help me with??

I have just purchased an Acer 5330 laptop and downgraded to XP. When checking in device manager, i get under 'otherdevices' a '?' saying Audio Device on High Definition Audio Bus as missing, but i used the required disks to do this downgrade!!

Please could someone out there please solve this problem that i have, or point me in the right direction towards downloading the correct driver??????

Many Thanks

Br4$$