QWERTZ unknown keyboard layout on HP EliteBook

The QWERTZ or QWERTZU keyboard is a widely used computer and typewriter keyboard layout that is mostly used in Central Europe. The name comes from the first six letters at the top left of the keyboard: Q, W, E, R, T, and Z.

The main difference between QWERTZ and QWERTY is that the positions of the "Z" and "Y" keys are switched, this change being made for two major reasons:

"Z" is a much more common letter than "Y" in German; the latter rarely appears outside words whose spellings reflect either their importation from a foreign language or the Hellenization of an older German form under the influence of Ludwig I of Bavaria. "T" and "Z" often appear next to each other in the German orthography, and placing the two keys next to each other minimizes the effort needed for typing the two characters in sequence (cf. the use of a single-block tz ligature in many early mechanical printing presses using fraktur typefaces).

https://en.wikipedia.org/wiki/QWERTZ Also this link has a good how too on changing your keyboard layout.

How to get german QWERTY on Windows?

Towards the bottom there's screenshots on how to set it up.