windows vista the audio service is not running

[ap77]

i have windows vista Ultimate.
and Sound card: Realtek High Definition Audio and Creative SB Audigy.
both have latest driver instaled running fine on Device Manger. (This device is working properly.)

but on Sevices i can't start/run windows Audio. Windows Audio Endpoint Buidler is running fine.

i have tried following 2 method but still not working
1)
windows Audio >> Properties >> logon tab >> i have check on "Local system Account"
but when i try to start i get follwoing error
Windows couldnot start the Windows Audio Service on Local computer.
Error 1079: the account specified for the service is diffrent from the account specified for other service running in the same process.
2)
windows Audio >> Properties >> logon tab >> i have check on this account "Local Services"
but when i try to start i get follwoing error
Windows couldnot start the Windows Audio Service on Local computer.
Error 1297: Aprevilege that the service require to function properly doesnot exist in the service account configuration. you may use the services microsoft management console (mmc) snap-in (services.msc) and the local security settings mmc snap-in (secpol.msc) to view the service configuration and the account configuration.

please help thanks

[ap77]

plz help...