Windows 10: Boot Menu Problem

Highlight the Macrium Reflect Recovery and the Safe Mode boot options under msconfig and Delete them from the boot order.
Or set the C: current OS as Default (see Attached)

Seems a perfectly reasonable idea- process of elimination.
If you find your symptom is resolved, it's easy to reinstate them, one at a time, and retest. If the problem relates to one only, you can leave the other. Then focus on further questions (e.g. to Macrium?).

If eliminating those has no effect - then the conclusion must be your symptom's most likely not related to them- and you can reinstate them.

Thing is, those being there may be something not tested by the people who made the change, as it's not a typical scenario.

Worth trying.

I don't know if I do, but I might. I'm going to edit my boot menu and see if that changes my current boot hang issues. Never really thought this might be causing some recent strange boot hang behavior on my Dell Venue Pro 11 7130, but shoot! That just might be it. Whether it fixes my problem or not, I'll report back here with the results (and the original circumstances, too). Thanks for bringing this tantalizing possibility to my attention.
--Ed--

Nope. I've had a boot hang since early January when the post-Spectre/Meltdown firmware and software updates came out. I had Macrium and AEOMEI boot entries in my boot menu. Just removed them, and that problem persists. I now remain more convinced than before that only a firmware update will fix my problems. Thanks for defining a great experiment to seek a different cause/fix, though. I do appreciate it!
--Ed--