We use the HDMI output port from the CPU for a monitor of vMix and to send video/audio vMix of the service to other parts of the church.  After most recent Windows 10 update, the HDMI port quit working. The computer sees there is something connected, but no output signal. I have confirmed everything downstream is working normally by connecting the HDMI cable to a laptop, but I get no audio or video output from the port. Any suggestions?