Pinebook no longer boots

[rjtanner]

As best as I can tell and recall, I unfortunately ran "sudo apt dist-upgrade" in the wrong terminal session, and now my pinebook no longer boots. I get a green power icon, but nothing else - no bios(?) or splash screen, no caps lock light - just a blank, black screen. So, no options to select a different boot media or the other options I have found while searching the forum.

Any advice or guidance, or forum posts or other resources I should reference to get this laptop back up and running?

Thank you.