Here are some steps you can take to try and troubleshoot your microphone issue:

1. Check your sound settings in your operating system and make sure your microphone is set as the recording device.
2. Check your sound settings in the audio application you’re using and ensure that your microphone is set as the camera’s audio source.
3. Unplug and then replug in your microphone to make sure there’s a tight connection.
4. Check for any external hardware that might be causing interference and turn it off.
5. Try a different microphone to check if the issue is with the current microphone.