thank u for your posting
i have tried everthing before vista drive is not suppoting
and no yellow mark in device manager
i think it is due to windows 7 contains inbuilt audio drive
i dont knw what is this but i have coped from system info currently i am using xp nw
PNP Device ID HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_10190000& REV_1001\4&1EF75AB&0&0001