Question Half memory showing up in bios

[bahtes]

I have had this problem for a few months now my pc will boot and no problems with all the memory in but in bios only memory in B1 will be recognised (its a mini itx motherboard that only has A1 and B1) I have tried getting a new motherboard, CPU and have tried 2 different sets of memory and cannot find the issue, it first happened when I re cable managed my pc and since then I've had this problem.


Motherboard: Asrock b550-ITX/AC
CPU: Ryzen 5 5600x
Memory: 2x Adata D60 8gb

 

[technologicalpixel]

maybe you have broken a ram slot?
or ram bank