How to check and repair the audio device failure problem in WIN7

Sometimes, when you start the computer, you find that the computer has no sound, the audio device is muted, but you don't know how to solve this problem. Here to teach everyone how to check and fix problems in the Win7 system.

to introduce you to a great new tool to find and solve the problem of Windows7 built-in system diagnostics tool that scans your computer and detects the root causes of common problems.

For ease of operation demonstration, we assume that computer hardware is working properly, but the headset is not plugged in, to see how the system will give us tips.

open the Start menu, Control Panel; and security in the system, choose to find and solve problems;

open Hardware and Sound, under the sound options, select the audio player; playing audio dialog In the fault dialog, select Headphones and click Next; at this point, it will give a diagnostic message: the peripheral is not plugged in; and a repair suggestion is given: plug in Speaker or earphones.

At this point, if you insert headphones or speakers, and click the Next button, the system will automatically change to repair, and to place the following dialog box:

(you can click on to view more information, get specific . the system diagnostics content)

and if you do not have to plug in headphones or speakers, just click the Next button, the system will become the following information:

(Similarly, you can also click on View detailed information, diagnostic systems for specific content)

so, simply select the option to be investigation, the system will automatically help you check, and given the appropriate repair recommendations; very fast and convenient.