The only awkward thing was I needed to rotate the screen to do Windows Hello, and then was back in business.
We have two of the new Surface Pro's i5 8Gb models.
Seem to have this problem were they both randomly shut down or go to sleep in the middle of doing something. Not sure if it is off or sleep.
After a press of the on button get the white 4 square windows logo and then the surface goes straight back to where it was when it switched off.
These are brand new fresh install and all updated.
Any ideas?