I recently switched computers and now my Promethean board won’t calibrate. I have installed, uninstalled, and reinstalled the drivers and ActivInspire, but my pen and my writing are still about 1.5-2″ off. Suggestions? I am thinking it could have something to do with the resolution on my monitor as well. My machine has 2 display ports, but I’m having problems when I clone them. Any advice is greately appreciated.