How to turn on the four channels under Windows 7

1. Right click on the speaker icon in the lower right corner of the desktop and select “Play Device”.

2. In the new window, select the playback option in the upper right corner, then select the speaker and click on the configuration option in the lower left corner.

3. Select four channels in the next window and test the sound device, then click twice to complete the next step.

The basic settings are now complete, and it turns out that the speaker of the headset has no sound. But when the test, all the speakers are normal? Is there a problem, so I opened the vid hd audio deck control panel.

4. Select the advanced mode in the lower left corner:

Select the two options in the following figure in the new window, and the following screen appears.

There are only 2 speakers in the picture, and the second channel is selected. The problem is here, the following four channels are selected, and the hahame finally has a voice!