Water cooler issue

So I recently built a new pc, was on it yesterday all fine. Today I noticed a noise sounding like dripping coming from what I presume the water cooler. It sounds like this

What is it and how should I fix it? There is no wetness in the machine as far as i can see/feel.

 

[JoneD]

Did you follow the manual? There might be excess air or something which causes that.

 

[Execution]

If you hear dripping disconnect it and return it straight away. You're not covered under warranty if your PC has water related issues. So just play it safe and return the water cooler and get a new one.