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How to Start/Stop
Windows Audio service
Description Services Regedit Back CMD Msconfig
Service name: Audiosrv
Display name: Windows Audio

Description:
Manages audio for Windows-based programs.  If this service is stopped, audio devices and effects will not
function properly.  If this service is disabled, any services that explicitly depend on it will fail to start.

Path to executable:
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
Type services.msc and press Enter
Services.msc:
This method shows you how to Start/Stop Windows Audio from Services.msc.
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Locate Windows Audio observe his current status and open to make changes.
From General tab you can Start/Stop and change the Windows Audio.

To finish press ok button and close Services window
Type regedit and press Enter
Please confirm User Account Control pop-up
Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Please navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Audiosrv
and locate Start registry key
Regedit:          
This method shows you how to change Startup type of Windows Audio from Registry Editor.
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
   
   
Type cmd, right click on cmd icon under the Programs and click on Run as administrator
Please confirm User Account Control pop-up
Please select, right and copy a registry key from below, then right click on command prompt window
, select Paste and press Enter

To Start Windows Audio:

net start Audiosrv

Note: You can’t start a service if Startup type is on Disabled.

To Stop Windows Audio:

net stop Audiosrv

To change Startup Type:

Automatic:
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v Start /t REG_DWORD /d 2 /f

Manual:
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v Start /t REG_DWORD /d 3 /f

Disabled:
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v Start /t REG_DWORD /d 4 /f

Automatic (Delayed Start):
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v Start /t REG_DWORD /d 2 /f

Note: When you change to Automatic (Delayed Start) a new key DelayedAutostart is created with value 1.
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v DelayedAutostart /t REG_DWORD /d 1 /f

When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0.
REG add "HKLM\SYSTEM\CurrentControlSet\services\Audiosrv" /v DelayedAutostart /t REG_DWORD /d 0 /f
CMD:          
This method shows you how to Start/Stop and change Windows Audio from Command Prompt.

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Msconfig:          
This method shows you how to prevent Windows Audio from starting with the operating system using
System Configuration (msconfig.exe).
Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Write msconfig and press Enter
Up Back
   
   
Double click on Start and edit the value:

Change Startup type :

Automatic - 2
Manual - 3
Disabled - 4
Automatic (Delayed Start) - 2

Note: When you change to Automatic (Delayed Start) a new key DelayedAutostart is created with value 1.
When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0.
In System Configuration please go to Services tab and locate Windows Audio.
Uncheck the box to prevent this service to start and then press OK to finish.  
Any change make in System Configuration will be apply after restart.