Pull it so out. Reseat repaste and check your connections. If it is unchanged then get your ears close to the pump and see if you hear and water flow it may be DOA but unlikely I'm betting poor pasting or mounting pressure 
Hello. I got my new Aurora R10 (AIO 5900X/RTX3080/32Gb) out of the box last night, plugged it in, went through basic setup. Noticed off and on fans going wild. Installed OpenHardwareMonitor, fans all seem to be running, CPU idle temps 70-80C, hitting 90-95C during light load (windows updates). GPU temps seem to be fine. What would be the troubleshooting steps here? Yank out the cooling unit, clean, repaste, reattach, see what happens? How do I check if the pump is working?
Aurora R10, 5900X high idle temps out of the box