No mouse on the left screen? That sucks, I’m sorry. Then maybe a computer connected via LAN with director running could be of help.
As for the long boot my guess would be that the system waits for the touchscreen driver to report the touch working, which it doesn’t.
You could try to lift up the surface and give it a good shake while turned off and try again. This is of course no professional advice, but something I do to see if things come back to life, only for checking purposes. If it works then, it can’t be too bad, but it could happen again any time…