Question Does anyone know how to fix weird noise from NZXT Elite 360 cooler fan

Welcome to the forums, newcomer!

Might want to see if disconnecting the fan in question and orienting it vertically changes the noise. While you're getting at the AIO, might want to clean those fans.

To me it looks like the fan is faulty/failing due to it's bearings are worn out. if you look around Reddit, you'll learnt hat their hardware is just rubbish and that the fans are equally rubbish. if your AIO's within the warranty period, maybe reach out to your seller/NZXTG and see if they send you a replacement fan.