Did you try using iFunBox?

I've got the exact same problem, I had exactly the same problem with the plastic and I noticed that the only thing working is the scrolling wheel (and the lights, obviously). I'm able to update settings using the Asus program. Mine stopped working exactly today and I've bought it the 30/11/2014. As we are exactly one year after the date I bought it, I think of a "programmed obsolescence". This is really curious.. Please update if you happen to solve the problem ;)