I got a weird screen during the process, pretty sure it was blue, and the default option was 'continue boot' which I selected, I think maybe it was the 'BIOS' ?
I couldn't google what to do while at that screen, or screenshot it either, for some reason.
I've tried uninstalling then reinstalling the drivers, but that hasn't made the mystery screen to come up again, and hasn't fixed my problem.
I will now go and research a fix, but as a newbie I don't know keywords like 'mok enrolment' or 'mokutil' or 'dkms' or 'secure boot' or 'shim' because WTF do those even mean?
Go ahead and try searching, see how long it takes you to find the command you need to run when you don't know any of those terms, or even that the problem is secure boot related.
Meanwhile, the BIOS with its 'secure boot on/off' switch is available every single boot.
> the key enrollment was literally 3 key presses plus the password away
If you don't count the 8+ character password you have to enter three times, maybe.