Check if the microphone is plugged in. If the lights are on the mic, then the power is working correctly. Check if the mute button on the MV7 has been touched by looking for a red light near the button. If the light is on, the mic has been muted. Simply touch it to turn it off. If that doesn’t work, check the Sound settings in your system preferences to ensure that your computer isn’t muted. To make further adjustments, you can also download the Shure MOTIV app.