My Precision 5550's internal microphone(s) have worked fine until today, when I was on a Zoom meeting.  I'm not sure if they were working before the meeting or quit working during the meeting.

I've tested the microphone on other apps, such as recording apps, but there is no sound coming from the microphones.  I disabled the mic, uninstalled the mic and rebooted, but still the problem persists.  I even uninstalled a recently installed software and rebooted, wondering if there could be a conflict, but the mics still weren't working.

Also, I disconnected my docking station and rebooted, but still the mics weren't working.

Has anyone else had this issue, and would there be something I could do?  Thanks.