B860 Pro-A Windows 11 installation issues

Hi. new user here. I have a problem with my new PC build and I would be very happy if you could help me.

Hardware:
- G.Skill Trident Z5 RGB DDR5 SDRAM 48GB kit CL40 On-die ECC DIMM 288-PIN (F5-8000J4048F24GX2-TZ5RW)
- INTEL Core Ultra 5 245KF 6+8 Kerne 4.2 GHz Sockel LGA-1851 CPU Boxed (ohne Kühler) (BX80768245KF)
- Asrock B860 Pro-A Intel B860 LGA 1851 (Socket V1) ATX (B860 Pro-A)
- PSU MWE Bronze V3 750W (MPE-7501-ACABW-3BEU)
- Asus GT1030-SL-2G-BRK graphics
- Kingston NV3 M.2 NVMe Gen 4 internal SSD (500GB)
- Kingston SA400 960gb SATA ssd drive

I'm trying to install Windows 11 on either drive.
- When the drives are visible on the simple front page of the bios.
- Both setup with empty gpt partitions.
- when running the windows 10 installer it sees the drives and I can install windows 10 on the sata ssd at least
- when running the windows 11 installer it cannot see the drives initially
- after loading the correct driver it sees the drives in both diskpart, they can be accessed via cmd and the "browse for device driver" window but the windows 11 installer does not want to continue.

I have tried a lot of different bios settings.
disabling VMD
global mapping
disabling secure boot
all sort of things

why does the standard windows 11 installer on a bootable usb build with the newest windows media cration tool not want to install?

any help is much appreciated.
thanks in advance
Martin Vestergaard