Odd noise from AIO

[Jito463]

So, a little over a month ago I built my Ryzen system, and for the first time ever I went with liquid cooling, specifically the Corsair H115i.  It works fine, but makes a very odd and annoyingly loud clacking noise from time to time.  I made a recording of it (ignore the video, that's just the side of my case), and - since I couldn't find a better way to upload it - put it on YT.  You may need to crank the volume up to hear it.  It sounded fine before uploading, but after viewing it online, it appears to be quite faint.

 

I'm worried that my pump may be bad, and I'd prefer to find out now rather than after it fails on me.  Any thoughts?  I could just contact Corsair, but I thought I'd start by asking others who are more familiar with liquid cooling than I am.

 

 

[Tr1ggerfish1]

I have an H100i V2 in my system, but I can say one thing I don't think its supposed to make a noise like that. Mine only makes a wind up sound on start up.

 

Edit: almost sounds like a loose bearing (I don't know for Shure) 

[paddy-stone]

Sounds like a loose fan mount or bearing to me.