You should see movement on the Input level display. To see whether the microphone is working, speak into the microphone. On the Input tab, make sure that the correct device for sound input is selected. On the Apple menu, click System Preferences. Solution: Check settings in System Preferences. In the conversation window, make sure that the volume slider is not set too low.Ĭause: Sound is muted or turned down low in the Mac OS settings. In the conversation window, make sure that Mute is not selected. Solution: Check the settings in the conversation window. If the microphone is integrated with the webcam, make sure that the webcam is connected correctly.Ĭause: Sound is muted or turned down low in the conversation window. Cause: The microphone is not connected correctly to the computer.įor each computer being used in the conversation, check the connection between the microphone and the computer.