Question Broken AIO?

[Shadowdorg]

Hey guys
I have a 2 year old AIO cooler and lately I have had this noise from it and temp in pc goes to 92 degrees in Helldivers 2 for example

What do you guys think? Broken? Bubbles? Or can it be repaired?

View: https://youtu.be/pE7j04UEfkI

 

[Crowii]

Sounds to me like air/bubbles in the pump. With enough air you'd definitely see a temperature spike as pumps a terrible at moving air around, and as such doesn't move enough water to the radiator.

Example video from Asetek on how you can clear the bubbles: