19th of Octobern 2014 and still no solution to this problem... so sad.
I have a similar issue where the keyboard goes unressponsive, and I remove and reattatch the type cover in order to get it working, and then boom it restarts, and unsaved work is lost.
The level of annoyance is reaching pure frustration.
It also seems to be completely random, I have as of yet not found a method to recreate the bug 100% every time.
on the event viewer it lists it as event ID 41 kernel power, I've had it happen to me four times today and it's only 2 pm