https://www.dell.com/support/kbdoc/en-us/000149193/how-do-i-stop-my-computer-s-microphone-from-causing-feedback-through-the-speakers?lang=en
Learn how to fix microphone feedback through speakers on your computer with these simple troubleshooting steps. Follow our guide to mute the microphone input...
microphone feedbackfixcomputerechoingspeakers