I have a kraken 120mm liquid cooler, combined with an r9 3900x and an mpg b550 pro mobo. after i installed the cooler, I have had this issue where if the cooler is screwed on just a tiny bit too tight (note: this happens before I encounter any serious resistance with screwing it in) it causes dual channel ram to not work and a subsequent failed boot. this results in me having to play this super annoying game with the cooler where I screw it in, if the pc doesnt boot, then I unscrew the cooler, reseat the cpu, and try again. repeat a large amount of times and it suddenly works. I've heard this is probably related to board flex, but I have no idea how to fix this as it is incredibly frustrating