How to solve the problem of no sound in front panel headphones of desktop PC?

Our computers are equipped with headphone jack, for us to plug headphones to listen to the song. No matter which Jack is broken, listen to the song can not sound, see the video can't hear the sound. Recently, there is a user response using the Win7 system, their desktop computer front headset jack is not sound, after the headphone jack has a sound, what is this? How to solve such problems? Here is how to solve the Win7 desktop PC front panel headphones no sound problem.

　　Methods/steps are as follows:

1, the mouse clicks the "Computer" right button, select "Management" item.

2, then select "Device Manager", in the right menu to find the "voice, audio and game controller" option to confirm that the sound card driver is not a problem.

3, the headset inserted into the computer after the headset jack, and then select the computer lower right corner of the small horn, right click, select the Sound Manager

4, in the "Realtek high-definition Audio Manager" window, select the Small folder icon in the upper right corner.

5, in the "Jack Settings" window, select AC97 front panel, when the green round hole in the front panel on the right is lit in the Realtek Audio Manager window, and the headset is plugged into the front headphone jack of the desktop computer before it can be used.