I'm not sure I follow you...
The grub prompt I get does not bot into a kernel or anything else. Here is what it it says on my screen:
GNU GRUB version 2.02
Minimal BASH- like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device completions.
When I hit TAB at the above prompt, I get a whole wall of text with commands. Too many to list here, and I'm unable to take a screen shot at this time.
I do see two commands that might help: legacy_kernel and legacy_password but nothing happens when I type them in. I think I need to pair them up with something according to the message at the top of the screen but I'm not sure what combinations would work.
I've been doing research on my own but everything I find is either outdated or simply does not fit my situation. Sounds like you may be onto something with the live usb, i look forward to seeing what you can come up with.
Anyway, thank you again for all your help!