Mute System Volume on Shutting Down

1. Download NirCmd,then extract to C:\Program Files\NirCmd


2. Click Start -> Run, then type gpedit.msc


3. Go to Computer Configuration -> Windows Settings -> Scripts (Startup/Shutdown), then double click on Shutdown


4. Click Add button, type C:\Program Files\NirCmd\nircmd.exe into Script Name.
And type mutesysvolume 1 into Script Parameters.
Click OK and close the Group Policy window.


To unmute system volume, click on Volume at System Tray, then uncheck the Mute.
Or you can also press a Mute/Unmute function key on your laptop.