How to use Win7 to find and solve problems built-in system Diagnostics tool detects sound failures

Open the Start menu, Control Panel, in the System and security, select Find and solve problems;

Turn on the hardware and sound, under the sound option, choose to play the audio, in the Play Audio dialog box, click Next;

In the Failure dialog box, select Headphones and click Next; At this point, it gives the diagnostic information: the peripheral is not plugged in, and the recommended fix: Plug in the speakers or headphones.

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

If you do not plug in headphones or speakers, click the Next button directly, the system information will become the following:

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