Simple 4 steps to restore your Win7 system sound

        After installing the Windows 7 system, many of my friends encountered problems with no sound in the system. No sound, no matter how good the movie, how to listen to the music is in vain. Check the speaker icon in the lower right corner of the taskbar is normal, click to use is normal, but there is no sound. How to solve such problems?

first step, you can make simple checks. For example, if the audio power supply and connection are normal, whether the front or rear interface of the chassis is normal. If everything is ok, then you can proceed to the next step.

second step, open the "Device Manager" to see "Sound, video and game controllers" directory. Usually, you will find that the device is not displaying properly. As shown below, RealtekHighDefinitionAudio is normal, but the ATIHDMIAudio column is marked with a yellow exclamation mark.