New Build Will Not POST with 4 sticks of RAM installed

[suhpr3me]

New build will NOT POST with four sticks of RAM.
PC will only POST and fully boot when RAM is inserted in B1 and B2. All other RAM configurations:
A2, A2 + B2, A1 + B1, A1 + A2 + B1 + B2 and everything in between produce Q Code 55.

Check the qualified list for memory and the RAM I am using is in the list:
Qualified RAM: CMP32GX5M2X7000C34

Hardware:

Asus ROG Maximus Extreme Z890
Intel Core Ultra 9 285k
Corsair Dominator Titanium 32GB (2x16GB)
Asus Astral LC 5090
Windows 11: OS Build 26100.4351
BIOS: 1901

I also tried these BIOS versions as well in hopes of finding a stable version, but no luck: 
1302 - POST with only two sticks of RAM
1401 - POST with only two sticks of RAM
1501 - POST with only two sticks of RAM
1901 - POST with only two sticks of RAM

[BHirsch]

That kit of ram is only listed to support 2 sticks and is only sold as a kit of 2 sticks. Check the far right column in the CVL and you'll see 1,2 listed where it would say 1,2,4 if 4 sticks were supported.

[suhpr3me]

Thanks, it seems I overlooked that one small caveat. 

[BHirsch · Accepted solution]

I have CMP96GX5M4B6400C32 in my HERO and it passed Memtest86 and has been running great. It's slower than the 7000MT/s you have but is 96GB. To get up to 7000MT/s you'll need the CUDIMM CMHC96GX5M4X7000C36. But you are going for 64GB you can probably find a kit of 2 that is even faster than 7000MT/s

[suhpr3me]

This is good to know. I was banging my head on why the 4 sticks were not working. I'll use 32 GB for the time being and if need be and upgrade to one of the kits mentioned above. Thanks a bunch.