it simply necessary to use 2 DIMMs?
At the moment the PC starts both in windows and in OSX only with a Dimm inserted in the second slot on the side of the CPU socket (should be A2)
I used the SSDT that are present in the EFI Posted by
@PoMpIs and used all the optimized options of the ASUS bios (load optimised settings), I disabled the fast boot and IGPU of the 7950x, I did not disable the thunderbolt nor the i225. thanks to Lorys89 we modified ssdt for the I225 with my ACPI path, at the moment without success. Always with the help of Lorys i have mapped partially my USB
@Galve2000 my GPU (6900xt) works in the first slot of the motherboard and the selector on the motherboard is on the car. LN2 Disable
I installed 3 NVME disks in the first three slots, the last one is empty
Now my problem is to understand where the user or hardware problem is
I hope it is a Kingston Fury Beast compatibility problem
but I'm afraid it has to do with the motherboard or the CPU
with my CPU cooler "Monster" is hard to do tests with memories I always have to disassemble it or keep it with my hands on the cpu
BIOS 0805 (latest)
with others DIMM combination installation i see always on debug code:
15
C5 (forever until i shutdown the PC)