Depending on whether you are using the desktop app or web app, you need to check Teams’ sound settings. Steps will remain more or less the same but for the sake of this guide, I will be using the desktop app. Launch the Teams app and while on a video call, check if mic and cam options are enabled. Also, check your laptop’s sound and speaker volume.
Click on the three-dot menu icon and select Show device settings.
A new pop-up window will appear in the right sidebar. That’s where you can check and choose any connected audio device, speaker volume, and other settings. Make sure everything is as you want and working correctly. Do you still face Microsoft Teams no sound issue?