Please check if the DIMM0 memory slot is populated.
Regardless of the memory configuration used (dual channel, single channel, or flex mode), DIMM 0 of Channel A must always be populated. This is a requirement of the Intel® Management Engine in ICH9DO.
All the best,
Thanks for advice.
Tried in various variants, and DIMM 0 And, DIMM 0 B, DIMM 1A 1B, both together and separately does not pass.