Silent Scone@ROG wrote:
Remove any overclocking including XMP profile
Reseat the CPU cooler and CPU and report back.
turning off XMP didn't help... stangly I got slots 3 mem slot back reseating the CPU... D1 still won't recognize any installed ram...
d1's ram chip will show up with model number any timings but not name and description
I run hard line liquid cooling so pulling the CPU and reseating is a task
And what was the reason and final solution?
I have the same problem: mobo is new + original BIOS 1301 + 8x 16GB DDR4 Corsair LPX 3200 MHz with Hynix chips (ver. 5.32) - only 3 channels A,B,C are visible, slots D1, D2 are not recognized, but what surprised me - in BIOS for slots D1,D2 only memory type is displayed (neither capacity nor manufacturer). For other slots A,B,C full DRAM information is displayed. It looks like D1, D2 slots are visible only partially ? I tested sticks from these slots in second machine with the same socket (ASUS X299 PRIME-A) with Thypoon Burner (Win10x64) and it reads them correctly (!). Like in the first case - slots D1, D2 of PRIME-A were not visible in BIOS. I don't think it is BIOS issue, rather memory incompatibility , wrong voltage / latency settings or faulty one of DRAM sticks....