Hey, I just installed my corsair H90 into my pc, when I installed it I was hearing swishing water noises, is this normal? Sorry, it's my first water cooling install haha. Anyway, everything is plugged in correctly and the circle thing is screwed onto the cpu, I haven't pushed it down and I don't know if it's touching the cpu, although all the screws are in correctly. Did I need to push it down or anything? 1 more question, How do I know if it's actually working? Thanks