Why is there no sound from the computer?

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The reasons why the computer has no sound are: 1. The volume is muted or turned down. You can check the volume setting by clicking the volume icon in the lower right corner of the computer screen; 2. There is a problem with the audio driver. Open the device manager and find the sound, video and game controller, right-click the audio device and select Update Driver; 3. The audio output device is not connected properly, check whether the computer's audio output interface is plugged in correctly; 4. Other problems, such as some options in the system settings are disabled The computer's audio chip may be faulty, etc.