I have a Noctua NH-D15 cooler bought in Feb 2020. After having used it for while I move into onto a new MB and CPU. Firstly I tried to boot with one fan, but the motherboard said fan speed error. Even thought the fan runs But if I connected fan number 2 they both run, and the fan speed error goes away. Could that be a problem with the Noctua fan splitter cable or the fans in generel ?