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ROG Maximus Z690 Hero - Q Code 55

Level 7

Got a bunch of parts for a new rig for Christmas but I can't even get it to post, always q-code 55 yellow light


ASUS ROG Maximus Z690 Hero(WiFi 6E) LGA 1700(Intel®12th&13th Gen) ATX gaming motherboard(PCIe 5.0,DDR5, 20+1 90A power stages,2.5Gb LAN,Bluetooth V5.2,2x Thunderbolt 4 ports,5xM.2/NVMe SSD,Front panel USB 3.2 Gen 2x2 Type-C connector)

Intel Core i9-12900K - Core i9 12th Gen Alder Lake 16-Core (8P+8E) 3.2 GHz LGA 1700 125W Intel UHD Graphics 770 Desktop Processor - BX8071512900K

Crucial Pro 32GB (2 x 16GB) DDR5 5600 (PC5 44800) XMP 3.0 & AMD EXPO Ready Desktop Memory Model CP2K16G56C46U5

MSI Ventus GeForce RTX 3060 12GB GDDR6 PCI Express 4.0 Video Card RTX 3060 Ventus 2X 12G OC

Cooler Master Hyper 212 Black Edition CPU Air Cooler, Silencio FP120 Fan, Anodized Gun-Metal Black, Brushed Nickel Fins, 4 Copper Direct Contact Heat Pipes for AMD Ryzen/Intel LGA1700/1200/1151

WD_BLACK SN850X NVMe M.2 2280 2TB PCI-Express 4.0 x4 Internal Solid State Drive (SSD) WDS200T2X0E

Seagate BarraCuda NE-ST8000DM004 8TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive

EVGA SuperNOVA 750 GT, 80 Plus Gold 750W, Fully Modular, Auto Eco Mode with FDB Fan, 7 Year Warranty, Includes Power ON Self Tester, Compact 150mm Size, Power Supply 220-GT-0750-Y1

What I've tried already:

Installing both sticks in every slot.

Installing each stick individually in each slot.

Reseating my CPU (3x).

BIOS update/rollbacks to versions 2802, 2703, and 2602.


I found the RAM was not listed in the official ASUS website but that the RAM manufacturer's website ensures compatibility with this motherboard. 

I've looked this up several times but nearly all of the posts mention being able to previously enter BIOS, I can't get it to post.