I to am having issues with getting the computer to boot via usb. The usb will boot on a couple laptops just fine, but when trying to boot from the Surface, it just spins, then boot normally. BIOS version 2.15.1226. Using a Kingston usb drive, that shows up in windows fine, with all the files, and is formatted FAT32. I tried to boot it through the 4 port hub and directly connected. Turned off secure boot, tried turning off TPM, but nothing seems to let it boot through usb. What was the workaround you found for the time being? I am in the process of completely refreshing the OS and will try again.
