How to check and repair audio device failure problems under Win7

Sometimes, when you start your computer, you notice that the computer has no sound, the audio device is muted, but you don't know how to solve the problem. Here to teach everyone how to check and fix problems in the win7 system.

Introducing a useful new tool to Windows 7 to find and fix problems with the built-in system diagnostic tool, which scans your computer and detects the root cause of common problems.

In order to facilitate the demonstration, we assume that the hardware of the computer is working properly, but the headset is not plugged in, see what the system will give us.

Open the Start menu, Control Panel; in System and Security, select Find and solve the problem;

Turn on the hardware and sound, under Sound Options, select Play Audio In the Play Audio dialog box, click Next;

In the Fault dialog, select Headphones and click Next; at this point, it will give a diagnostic message: Peripherals Not plugged in; and give suggestions for repair: plug in the speakers or headphones.

At this point, if you plug in the headphones or speakers and click the Next button, win7 Ultimate will automatically change the repair and give the following dialog:

(You can click on the details to get specific system diagnostics.)

And if you don't plug in the headphones or speakers, just click the Next button and the system information will become the following :

(Also, you can also click on the details to get specific system diagnostics.)

This way, just select the option to be checked, the system It will automatically help you check and give you the corresponding repair suggestions; it is very fast and convenient.