I've been experiencing this issue with a full crash when turning it back on - (surface book I7 512 16g)
i get blackness and have to wait 2 minutes for it to resettle it self while holding the power button down. (not very good)
id just like to put forward my thoughts on where its going wrong.
the machine seems to boot well providing the GPU is not in use. (this is where it uses its keyboard)
and this where it goes wrong.
my advice to anyone before sending the laptop to sleep, shut down and close all programs and it should be ok. anything that was using the GPU will basically kill windows. anything that uses just the CPU will probably be ok.
also before you put your laptop in your bag wait 3 minutes to let the CPU cool down other wise the machine will scream at you for overheating it.
microsoft can you please look at doing a hardware update to this because its been going on for w-a-y too long.
its a great looking machine with lots of cool functions but with too many hardware issues.