@CENS I don’t know if you, Luumi, or Biso Biso can give any insight.
Z790 Dark KP
13900KS
7600 gskill kit
tried four different Zotac 4090s and this board just fails to post. Boot loops memory initialization codes. 53, 54, and 7F. I’ve swapped memory kits, nvme drives, sata drives, coolers, etc. nothing. Won’t boot.
zotac gt710 boots just fine