What should I do if the Win7 system computer displays "No audio output device installed?"

When using a Win7 system computer, sometimes it will encounter audio failures. The most common occurrence is that the sound cannot be played. At the same time, the system also displays “No audio output device installed”, how to solve this problem? Solve it? Generally speaking, the problem is caused by the sound card driver failure, so we can update the sound card driver to solve this problem.

Method One:

1, right-click the Computer icon and select Open Device Manager;

2, find the & ldquo; Sound, video and game controllers & rdquo ; see in this catalog & ldquo; audio & rdquo ;;

3, the driver downloaded from the internet, and installed to high definition.

Method 2:

1. Download a driver software, such as 360 driver master, driver life, driver wizard, and open it;

2, the software tool will automatic monitoring of the problem drive, click download and install the sound card driver;

3, good sound card installed, the computer will have a voice.

Both of the above methods solve this problem by updating the sound card driver. If you find that the computer has no sound, you can also check if the audio device works normally.