X570 Taichi d0 RAM error

X570 Taichi
Ryzen 9 3900x
GTX 1080
G.Skill TridentZ 4x8GB RAM

Today I decided to do some preventative cleaning of my PC without removing the motherboard. After reassembling everything, the motherboard is giving a series of error codes: 27 -> 14 -> 15 -> 0d, at which point it stops and restarts the PC, resetting all BIOS settings in the process.

As it turns out, the error only occurs when I install the RAM in slots B1 and B2. If I leave it only in slots A1 and A2, the PC starts up normally. However, the PC has always worked with all 4 slots before the cleaning.

I've tried disconnecting all PC components and running it with only the processor and RAM connected, but nothing changed.
Even loading my old XMP profiles doesn't help. Manually setting the RAM frequency, guided by the motherboard's Manual also doesn't help.
Although, when I changed my RAM frequencies, the motherboard starts showing me completely different errors and getting stuck on the f3 error, but few seconds after it reboots, erasing the BIOS settings along with the frequency settings, after which I get the same d0 error.
I also tried simply reseating the processor, but there's still nothing.

If it all comes down to mechanical damage on the board, then my only guess as to how this could have happened is when I removed the CPU cooler and accidentally pulled the processor out of the closed socket. Although, upon inspecting the contacts of both the processor and the socket, everything looks fine.