Thanks for the info, so the HW is quite a bit older than what we tested.
Boot to the initial installer grub menu.
There press the
e key to edit a boot entry (e.g., the Graphical one)
Use the arrow keys to navigate to the line that starts with
linux, move to the right where the
quiet parameter is, delete that (so we maybe get a bit more info) and add
nomodeset there, just as the screenshot below:
View attachment 58654
Then press
CTRL +
X to boot.
So potentially an issue with the newer kernel, hmm maybe we can get some hands on such old NVIDIA GPUs somewhere.