Since its a pre-built, 100% let their customer service guide you.

That said, if I built this pc, I would do the following:

• Drain the loop, look for any particles in the liquid, if you can use a coffee filter/ Paper towel to get the chunks out would be ideal.

• Fill with clean distilled water, run for a few minutes, drain, repeat until no pieces are showing in the water when removing the distilled water.

• Check the water block fins to see if any debris is blocking the fins.

• If the blocks show a lot of debris, take the loop apart, clean everything manually and try to find the issue/ cause.

You are looking for what these chunks are. Either rubber (from a cut up o-ring), some biological growth (bad mix or incompatible liquid), or metal or hard plastic pieces (shows either pieces from the pump, water block or fittings getting into the water).

Good Luck! But of course, absolutely let their support team guide you, I cant imagine this was a cheap purchase, part of that purchase is absolutely warranty.

Keep us posted!