Rattling noise

[EvilGenius]

Hey guys,

 

I just got my new Cooler Master Nepton 240M today and its making a rattling noise, not too loud but every 10-15 sec and it last 10-15 secs. It's plugged in the CPU_OPT, when i go on my motherboard(Asus Maximus Vii Hero) settings in AI suite my rpm for my CPU_OPT is between 2600-2800. Do you guys have any idea what to do? 

 

 

Thanks for the help!

[Deli]

Noise comes from the pump. Sometimes reduce the pump speed slightly will kill the noise if you're lucky. If that doesn't work out, RMA it is the only way.