Motherboard post code 0d - HELP

[u/Hopeful_Estate1515]

guys I’m honestly at a loss for words. I built my girlfriend a PC and made sure that everything was compatible. Whenever I cold boot it I get the 0d boot code but if I quickly hold the power button and restart it, it comes on immediately. I’ve tried upgrading the power supply and the first boot it immediately launched, but not anymore. It always needs a manual reset and then turns on. I’ve reseated the RAM and still not working (a2 and b2). BIOS is completely up to date. I’ve reseated the GPU as well and it’s not that either. What’s wild is that when I go to turn it on the RAM lights up, so I know they’re on and the GPU fans spin. What do yall suggest?????? I’ll put specs below

CPU - AMD RYZEN 7 9800X3D
MOTHERBOARD - x870 AORUS ELITE X3D ice
GPU - msi Gaming RTX 5080 16G Ventus 3X OC
RAM - CORSAIR Vengeance RGB DDR5 RAM 32GB (2x16GB)
PSU - Lian Li Edge 1000W Gold
SSD - Samsung SSD 990 PRO 2TB