h100i loud pump humming

The pump is making a loud humming noise. It works, but is still very annoying. I've tried unplugging all the fans from the pc and it is just the pump making the noise. I've also used corsair link to make all the fans run on the lowest rpm as possible so it's the pump. In corsair link the pump runs at 2243 rpm.



So is the humming noise normal or not and how can I solve it