Windows Vista the audio service is not running

i have windows vista Ultimate. i have no sound coz of Windows Audio Service won't start ( even its automatic or manually).

and Sound card: Realtek High Definition Audio have latest driver instaled running fine on Device Manger. (This device is working properly.)

but on Sevices>>> Windows Audio Service 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

here is event log error message. when i try run/start Audio Service on Services please help.



The Windows Audio service failed to start due to the following error:

The account specified for this service is different from the account specified for other services running in the same process.



System


- Provider

[ Name] Service Control Manager
[ Guid] {555908D1-A6D7-4695-8E1E-26931D2012F4}
[ EventSourceName] Service Control Manager

- EventID 7000

[ Qualifiers] 49152

Version 0

Level 2

Task 0

Opcode 0

Keywords 0x80000000000000

- TimeCreated

[ SystemTime] 2007-09-04T00:11:23.000Z

EventRecordID 9309

Correlation

- Execution

[ ProcessID] 0
[ ThreadID] 0

Channel System

Computer LH-MESBNJ61IVSC

Security


- EventData


param1 Windows Audio
param2 %%1079

thanks CC but that didn't help at all. i have install both 1 at a time but still Windows Audio Service won't start.