Set the Win7 audio Manager method.
The method is as follows:
1, first unplug your speaker audio line down, temporarily do not connect, in the control Panel to open the hardware and sound buttons, the appearance of the interface as shown in the following image, click on the audio Manager:
2, plug in the speaker audio line, if the audio line or speaker normal, at this time the computer will be prompted to detect the new audio equipment, the interface is as follows, if there is no such a hint, that your speakers or line has problems, no longer toss on the computer.
3, in the previous step pop-up "currently connected devices should be identified as" dialog box, according to the device you inserted to select the line, here we are inserting speakers, so tick the input can be selected, the last click to determine
4, so our basic settings are good, the manager will be able to identify our equipment. Down is in this interface to our audio output to do a variety of settings, the interface is relatively simple, and is Chinese, literal meaning to know what function, here no longer repeat.
5, these settings themselves adjusted, you can turn on the stereo, play to see. If the settings are correct, there is no sound, or sound is not normal, it can only be said that the hardware problem!