New build wont post

[Thunder302]

So, I just decided to upgrade to intel 12th gen. I bought an i9-12900k, gigabyte aorus master mobo, and 2 sticks of 16gb gskill trident z5 memory. I also upgraded to a 360mm h150i elite lcd. This isn't the first time I've upgraded cpu generations nor is it a first for a new aio or really any upgrade. So im relatively experienced when it comes to installing any new hardware on my pc. I've got a problem though that I'd really appreciate some help with. This new configuration wont post whatsoever. I've checked all my connections, made sure the memory was installed correctly. I tried running single channel on each stick in each slot to no avail. I've cleared the cmos too and still no result. I stripped my pc down, took the gpu out and tried running it like that, still nothing. I can't even get into the bios. My psu is an evga 850w gold rated so it shouldn't have any issues delivering the juice the components need. My fans spin, rgb turns on, the pump turns on so power is working. I'd also like to note that the lcd screen shows displays a red triangle with an exclamation mark aswell before the pc powers on. When I turn it on, it stays on for around 20-30 seconds before restarting and trying to reboot itself. I get the same error codes off of the mobo everytime no matter the ram configuration unless its entirely out of the system. The codes are: c2, c4, 28, 54, c1. I know c2 and c4 are codes for "reserved". I dont know what that means. I know 58 is memory initialization error occurs from the manual of the mobo. I forgot what 28 means to be honest. I also believe at one point i got 58 aswell, cpu self test failed/cpu cache error, but it dosen't pop up anymore. The only thing that i can think of is the memory or the slots are faulty. The only troubleshooting methods I haven't tried are quick flashing the bios and checking for bent pins/reinstalling the cpu. Although, i severely doubt I seated the cpu improperly. That's the only other things i can think to do besides getting a new set of ram from the seller and returning this current set. If that dosen't work then i return the mobo and try that, if that isn't what it is then I guess I replace the cpu aswell. If anyone has any further insight/troubleshooting for this I'd greatly appreciate it, for now my rig is down, big sadge.