I will look for your support ticket.
In the meantime, On the Windows side, you need to get windows stable. Don't worry about Isadora. First get Windows capable of restarting with all attached displays connected as expected. This may take some detaching/reconnecting and rebooting. Once stable you can move to Isadora.
I would say that its possible that the Isadora Preferences should be reset (menu option in Isadora for this).
And I would also, clear your stage settings and re-create the stages. Just incase that was messed up due to the power outage. Having these stable in Windows first is key.