So, a little background, this PC is a Fractal Define C with 1 rear case fan, a Ryzen 1700 with a Fractal s24 AIO. I recently started hearing this noise very sporadically (this is only the 2nd time in a week), and it goes away if I restart the PC. It's definitely not my rear case fan (had it unplugged in this video), and I'm pretty sure it isn't either 120mm fan on my rad, as they spin OK, and all the bolts are tight. I am also pretty certain it isn't my GPU. This leaves the pump...
All the RPM readings in ASUS Fan Xpert 4 look fine with the pump running at it's usual ~2400RPM, and if I put my hand on it while the noise is being made, it feels ok though...
Is this the sound of a dying pump? or something stuck in the lines ?
Weird PC noise_01.mp4