Win7 headphones and speakers have no sound, the easiest solution

It doesn't happen that there is no sound on the computer, but there are many reasons why the computer doesn't sound. If you want to eliminate it one by one, sometimes you don't know when to exclude it. But if you are a win7 system, there is an easy way to find out where the problem lies.
1
win7 has a function to help you find the problem automatically
click the start menu, control panel; in the system and security, choose to find and solve the problem;
2
open the hardware and Sound, under Sound Options, select Play Audio; in the Play Audio dialog box, click Next;

3
In the Faults dialog, select Headphones and click Next; at this point, it Diagnostic information will be given: the peripherals are not plugged in; and suggestions for repair are given: plug in the speakers or headphones.

4
At this time, if you plug in the headphones or speakers and click the Next button, the system will automatically change the repair and give the following dialog box:

The above is about win7 headphones and The simplest solution to the sound of the speaker, the above fault analysis, in fact, is mainly used to help you find the problem. The solution is to combine the actual situation, basically knowing where the problem lies is very easy to solve.