Win7 open folder appears prompt sound how to close

First, in the bottom left corner of the Win7 desktop, in the "Start" menu, open the "Control Panel", and then enter the control panel interface, select the small icon for the view mode, and then select the "sound" .

2. Open the voice dialog box and switch to the “Sounds” tab in the Win7 system window. In the sound scheme, click the inverted triangle on the right to select from the drop-down menu. The item you want to set. For example, you don't want to have a system sound every time you open a folder, you can set it to “ Silent”. Click the “OK” button to complete the above settings.