XMP Issue After Updating to BIOS 1203 on ROG Maximus Z890 Hero

[Mikawo56]

Hi everyone,

I’m running into an issue with my ROG Maximus Z890 Hero motherboard after updating to BIOS version 1203. My CPU is an Ultra Core i9-285K, and I’m using 2x48GB Corsair 6400MHz CL32 DIMMs (CMP96GX5M2B6400CL32).

Previously, on BIOS version 1101, I was able to enable XMP without any stability problems. However, since installing BIOS 1203, I can no longer activate XMP without running into errors. The system either hangs at Q-Code 61 or crashes shortly after the POST. If I disable XMP, the system appears stable and boots into Windows without issues.

I have tried reverting back to BIOS 1101, and as expected, I can enable XMP again and everything works fine. Has anyone else encountered this problem after updating to BIOS 1203?

Thanks in advance!

[dviper42]

If you run xmp 2 for 8200 then set the memory to 8400. Run dimm fit. It will run for 3hrs then test memory for stability. 

[Austntok]

Over 8000 is kinda hit or miss for me. I have 8000 and 8200 kits. They work on some bios versions and not on others. My 8400 cudimms don't work at all.