I am using Windows 7 professional OS... and i got some problem with my sound system..
But when I rebooted my system with Backtrack OS.. I could listen the startup sound. and nothing other than that. As it is a live OS I am using,i didn't install any media players.. so couldn't check other sounds in Backtrack...
but in windows i couldn't even hear the startup.. I 've tried reinstalling the sound drivers
. But it was of no use..