Yep, the pump is at 0 RPM. I’m pretty positive all headers are properly connected. Any idea why this would happen? Just a random failure or able to be troubleshooted?

If your AIO is connected to a fan header on your mobo, you should be able to get an RPM reading from it to see if it's working.

Can anyone please help me figure out what’s going on? I read online that a common problem was power headers not being fully seated or something so the pump stops. The block feels hot but the radiator feels cold so I could see it being a pump issue. I can’t tell if the vibrations on the radiator are from the full throttle fans or the pump. After turning my pc off for about 5mins, it seemed fixed, but then everything went full throttle again.

Corsair H80i sudden high temps and full fan speed while listening to Spotify?