... I also tried to use a regular US QWERTY keyboard and via "just tablet mode" but as soon as I change the settings, it will boot up and ask me to enter the 4 digits. It does not matter what key combination I press, nothing works ecept the ESC key.
I don't have a Bios, Masterboot, or any password installed. It is still the plain vanilla setup the machine came.
Thank you very much for your support!
Surfix007