Generally, this situation is mostly caused by the microphone. If you have voice video with people, adjust the microphone gain effect, such as QQ in voice adjustment. In addition, it is also possible that the microphone has started recording, so adjust the volume of the microphone in the system. Double-click the speaker in the lower right corner. If there is no microphone option, click Properties in the option, check the in front of the microphone, and then click OK, so that you can see the microphone option.

In the recording control, it is impossible to mute the sound and audio devices in the control panel, switch the voice tabs and adjust the volume internally.

It is also possible that there is strong magnetic interference around you, which affects the speaker and changes the position of the laptop.

References: /forum-8- 1.html.