I have the newest Surface Pro (1796) and am stuck in a boot loop. Yesterday I did a check for Windows Updates and it found 2 firmware updates both dated for January 2018. I opted to install both. However, I forgot that I had Bitlocker enabled and I know that Surface Firmware updates and Bitlocker never mix. (Microsoft, you should really work on this, please)
Anyway, I am now stuck in a boot loop. I have attached a picture of what I see. The circle will almost fill all the way and then stop. About 10 seconds later the Surface will reboot itself and continue the process over. This has been going for hours and nothing I do fixes it.
I have tried holding the power button for 30 seconds, using the two button shutdown method, nothing is working.