I am having a similar problem. I upgraded via the LB prompt from 13.8 to 13.10 on Win 10 Home & when I launch LB it starts with progress bar and then puff just disappears and nothing happens. I tried installing & reinstalling and yes it is not in launchbox/launchbox.
I just bought the darn thing & barely have 4 weeks into it and already this thing is a dud.