After a fresh reinstall and connecting up:
Install the drivers
sudo ubuntu-drivers autoinstall
OR open Software and Updates and click the "additional drivers" tab.
I would guess similar but I would only be guessing at this point. I am a bit confused, too. Even so, the ctrl+alt+F1 should have allowed text based input, so I am at a loss, too.
When troubleshooting becomes fun, we are not doing Misery Correctly.
Your wifes computer's not working. Come on, let's be serious.
"Ducks and runs"