Zoom meetings repeatedly crash entire computer, causing a restart

Every meeting I've been on for a couple of years now as a client (not initiated the meeting), my entire computer crashes and shuts down about 20-30 minutes into a meeting. I have to wait for the reboot sequence to complete and log back into the meeting.  This happens repeatedly during the same meeting. Have to abandon my desktop (Windows) and use a laptop or IPhone to complete the meeting.  Extremely annoying and disruptive. For some reason it doesn't happen when I've initiated the meeting.