Hello, So, I bought a Nepton 240M there is around one month ago, but I could only install it last monday. For the first day, it was perferct : awesome performance, no problem. But tuesday, it started to be really noisy, i let it run 2 without doing anything, hoping that it could maybe solve the problem (I'm a newbie in watercooling, but I've hope). So, today (thursday), I tried to solve it. As I read it could have been a bubble, I layed it on the side, it's a bit better, but not that much. Oh, and I verified, that's the pump who makes such noise, not the fans. There is a sound preview, if that can help anyone identifying the problem : https://youtu.be/mny6LeCbr2o If you know if that's the normal sound, or anything tell me.