1. First of all, single hit open Win7 computer Start menu, from the Start menu, click Select Control Panel Options.
2. Then you can open the Win7 Computer Control Panel interface, in the Open Control Panel interface, click to select the "Realtek high-definition Audio Manager" option, if you do not see this option in the interface, first the upper-right corner of the view to change to a large icon, Then you can find this option.
3. Click to enter the upper right corner of the "Equipment Advanced settings", and then select the interface "in the insertion of the front headphone device, so that the rear output device mute, finished point" OK "exit. If this is the default, you do not need to change it, and then click to enter the folder diagram as shown in the figure.
4. Finally, check "Disable front panel settings when detection", click "OK" exit.