I have 2 screens hooked to my desktop.
I stream to my TV so I use an HDMI splitter. Last Win10 update I lost my TV connection. Unplug, re-plug, no connection. Unplug, reboot, re-plug. Nope. 10 minutes online searching, no good. Just for grins and giggles I swapped the connections to the HDMI outputs. Everything works! No notice from Win10, no "Look, I found a 2nd monitor". Zip! I think Microsoft was checking to see if I was still alive.
I stream to my TV so I use an HDMI splitter. Last Win10 update I lost my TV connection. Unplug, re-plug, no connection. Unplug, reboot, re-plug. Nope. 10 minutes online searching, no good. Just for grins and giggles I swapped the connections to the HDMI outputs. Everything works! No notice from Win10, no "Look, I found a 2nd monitor". Zip! I think Microsoft was checking to see if I was still alive.