Zna li neko kako isključiti unutrašnji zvučnik na Dell PC?

Pokušao sam ovo ali nema efekta:

Click the "Start" button and then "Control Panel."
2 Click "Device Manager."


3 Click "View" and then "Show Hidden Devices."


4 Expand "Non-Plug and Play Drivers" by clicking the plus sign next to it.


5 Double-click "Beep" in the list.


6 Click the "Driver" tab.


7 Click the drop-down list box and change it from the current setting to "Disabled," click "OK" and then close Device Manager