Weird Post code issues

[castlefo]

Hey guys need help been in a constant state of various upgrades for my PC for years and I have never seen anything like this before.  After many different mobo and cpu combo's currently rocking a MSI prestige x570 creation ryzen 5 2400g upgrading when budget allows 32 GB gskill 3600@ cl 14 MSI ventus RTX 3090 corsair hx 1200i sabrent rocket 2tb gen 4 m.2. now for the problem mobo has Post code readouts for various issues.  On boot up it will cycle through dozens of codes sometimes several minutes worth. It then boots windows or gets stuck on a random code never The same one twice in a row except for today it's code of choice was c9 and c6 with the CPU debug light staying on. Previously when it would Boot to windows after logging in screen would black out to fix had to select a different input on display and then switch back to main input. However The Post code readout would switch from AA to d9. I don't remember what d9 is its not listed in my manual and only once found an answer on a random Reddit thread but it wasn't brand specific and indicated that the PC shouldn't be running at all but it would work just fine for a few days then get crazy unresponsive taking multiple minutes to open a web browser and multiple slow hitching jumps to move The cursor across the screen. A reboot fixes this ( only after many failed attempts and hard power cycles though so I have only been reboot when it slows down to the point of being unusable) now after dissembling The whole thing still gets stuck randomly on a c9 or c6 but if and when I get into windows The Post code readout just randomly count's down it starts at 70 something and count's down jumping up and down by 1 2 or sometimes 5 until it hits the 20s were it bounces around from 35 to 26 never ending. Any thoughts or ideas would be greatly appreciated. Note I bought The MOBO early and didn't install for several months while waiting for The 3090 so a return was impossible and MSI customer support has been very slow and unresponsive. Side note anytime I do a major hardware or storage change I install a fresh copy of windows and redownload new drivers. If any one needs more information I AM happy to provide it also can't seem to find were I stashed The MOBO manual probably put it somewhere safe so I wouldn't loose it lol.