Question AIO making weird sound?

[NotEvil]

Video of sound

I just bought a pre-built pc a week ago and it just started making this weird sound last night . At first I thought maybe something was stuck in one of the fans or one was hitting against something, but I didn't see anything when I looked. This pc also has a Cooler Master AIO, so I'm wondering if it could be that. This is my first pc with an AIO so I'm not entirely sure if it could be that or if this is a normal operating sound for one, but I'm leaning towards it being the AIO.

I was also able to get it to temporarily stop by shutting down the pc and restarting, but it came back after awhile


Is there a way to make this noise stop permanently?

 

[punkncat]

How do you have the pump/tubes/rad oriented?

There are loads of vids and whatnot, but you want to make sure the pump can't be oriented in a way that air can get trapped in it. From your video I didn't hear anything completely out of hand. Pumps do make noise. I am also about conversationally deaf, might wait for someone else to chime in on that aspect.