Has it been an update overnight? Today my Surface book boots into UEFI upon waking and from then on, keeps booting/restarting into UEFI.
SO IT IS BRICKED.... the online support chat appeared to be congested. I waited two and a half hours to go from position 7 to 1, and the page crashed.
Hi,
Let's help you run Windows correctly on your Surface Book. We suggest that you follow the steps in Surface turns on, but Windows won't start support article to rectify the issue that you're experiencing.
Regards.