Vista 32 bit and Realtek HD AUDio

Hi all similiar posts on this board... Have a new comp with vista 32
bit home premium installed AMD k8 Processor Driver version
6.0.6000.16386

realtek HD Audio ... Drivers all installed and up to date..........
working properly
however .. media center wont play a cd or dvd
media player wont play either
speakers are connected properly/// volume set at 99
windows sound test will not run
there is no sound from the comp
whatso ever

norton anti came with a 3 mth freebie
hopwever everytime the comp shuts off and starts again I get message
for Live update
many programs are hidden or do not work properly.....

but everything is up to date and supposed to work after all it is a
brand new comp .. only 3 weeks old.. thanks for your help