The "Sleep of Death Bug" hit me last week...
....just on the plane on the way to my customer.
Because I was stupid, I had also participated in the W10 insider preview program with the Surface Book. (Slow ring, though)
While the W10 insider versions work fine on all my other machines, the combo of the sleep of death bug and the W10 preview, led to a crash. The machine did not get beyond the light blue screen with circling dots.
I had to re-image the machine.