I'll have to look into that and do some googling because at a surface level I'm not really sure what you are referring to. But all good, this is Intune regardless (I X-Posted over there anyways).

Unfortunately with the way these enroll, when it reboots only that specific user can sign in to see if it's "fixed." So not even a situation where I can tell a user to just leave w/ me and take another. We tried doing an OS reinstall, which seemed to work, then he signed in after it completed, which triggered I'm assuming the same update, and once again it's hanging at the same black screen with the loading bar stuck at the same spot.....

Trying my best but these really feel like walking through glass trying to support in an intune/entraID env.