Today, the Win7 system under the headset does not sound how to do this issue to share the solution and detailed procedures.
Step-by-Step troubleshooting is as follows:
First step
Troubleshooting headphones, two methods.
The first is to use headphones on other devices (other computers or MP3) if the headset is normal the problem is with the computer.
The second use of other normal headphones on the computer to test, also determine whether the problem is on the computer.
Second Step
Determine the driver installation (hardware use requires driver support, although the sound card driver is generally installed, but in order to eliminate the problem or carefully excluded) running software or security software such as the driver detection function.
If the driver is not installed, install the update driver, and if it is already installed, go to the next step.
Third Step
Click on the Control Panel to enter window Device Manager and select Sound and volume management in the Device Manager (by the way, check to see if the mute is turned on or the volume is too low)
Fourth Step
Click on the headset device to view the device properties to see if the device is disabled.
If the device is disabled, select Enable the device.
Fifth Step
The problem detects that there may be a problem with the socket. In the headset properties to see if the headset is plugged into the state.
If not, then the headset is not connected, try to slowly turn the headphone plug to see if there is a sound.
If there is no word, it must be the socket has broken down, suggest to overhaul
This is a common method of notebooks.
There is another way for desktops: desktops have front and rear two headphone sockets.
Follow the previous method to troubleshoot, after replacing the front socket, try the rear.
If there is a sound may be the front of the broken, or disabled.
If it is disabled, it is still enabled in device management (or in audio-driven device management)
Note: The problem is always resolved gradually by the elimination of slowly, if you spend more time, your computer can not estimate the fault will be less