I was trying to install Endeavour OS on my newly built system, but the live installer booted to a blank screen.
This is a pretty known issue these days, and has to do with the Intel integrated graphics.
You can find more info on the below links. https://bbs.archlinux.org/viewtopic.php?id=266690
Have you tried different outputs? Like HDMI/DP1/DP2/et cetera?
Also MAYBE if it’s a grub bug you could try to update grub of the installer or install grub from Ubuntu 21.04 and then target your USB flash drive with desired parameters (those from the install ISO and check also the parameters of ubuntu 21.04 grub, maybe there is some flag that solves your issue)
If you have another PC you can probably install it from there with all the necessary drivers/configs for your current computer, update and then boot on your z590.
If not MAYBE you can install the system via Virtualbox/or another VM to your hard drive (or install in the virtual box image then clone it/write to your actual hard drive) with all the stuff that you need and then boot it.
I am sorry if I’ve created some confusion, those are some crazy hacks that I’ve though off to solve your issue. lol
EDIT : you might want to try the latest DevISO.
It should be the easiest solution