Can't start or join zoom meetings, issue with speaker

All of a sudden, I can't start a meeting.  I get a blue circle like it's working on starting and then says, it can't detect my speaker.  My speaker IS broken on my computer but I've been using an external  speaker without issue until now.  I tried to join a meeting and got a message "Can't detect microphone" but when I click "test speaker and microphone" I get the circling blue that never stops.  Any ideas?