So I've cleaned out my computer of dust. It's been gathering for at least a year I'm sure. Most of the cleaning was done by using soft toilet paper for the inside of the case, dust gathered on the watercooling block and PSU, the fan blades, and watercooling radiator. But right after I reassembled it (read: I put the radiator and fans back) to put it back to use, the problems started to emerge. I heard a strange rattling sound and the pc would shut down shortly after being logged in. Apparently something got loose in the cooling block, got stuck near the pump, and the CPU started overheating rapidly because of it. I switched to the stock fan, but then my pc got stuck in a boot-loop. After some fiddling, this seemed to be circumvented if I took 1 of my memory sticks out of the slot. This meant that my pc would work, but only with 4GB memory instead of 8GB. I now purchased a new set of 2x8GB memory, but the exact same problem occurs: bootloop when both sticks are in place, normal when one is in place. My motherboard is dual-channel and I've confirmed with the manual that they are in the correct positions. It also doesn't matter in which channel I put the 1 remaining stick or which 2 dual-channel channels I put them both in, the results are the same. Does this mean there's something wrong with my motherboard (in a way that can be explained even though I hardly even touched it while cleaning) or can someone think of something else that's going on? I'd hate to buy a spare of every component just to figure out which is the culprit.