Computer plugged in headphones, no sound, or computer plugged in headphones or an external accent.

Many netizens use the Win7 system when there is a sound and plug in headphones, when the sound of audio headphones but no sound, or both have no sound, or the computer plugged in headphones or external voice. This is usually the case because the default playback settings for the system are set up.

Workaround:

1, the mouse double click the computer--click on the display bar to open the Control Panel as shown in the picture

2, then select the hardware and sound

3. Click on Hardware and sound

Select the sound playback device you want to use as the default sound device in the first column of the playback device.

Or select the Sound playback settings you use, and then click the properties in the lower right side of the pop-up dialog box to choose to use this device as shown in the figure

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