I have taken out the ASUS fan control software under AI Suite and DIP5 as they were causing crashes when attempting to adjust the fan speed and I mean the whole system would just suddenly turn off.
I tuned the fans under BIOS but when I came in two days ago the PC was asleap, I woke it and sat down and I could see the CPU temp climbing on the Qcode display, it got upto 62 degrees and the fan stayed off, I pulled the power plug, waited for about 45 secs and then plugged it back in, with the cold start the fan started up again, I went into BIOS and disabled QFan. It was just after that, that I went searching and found mention of some ASUS boards not liking Noctua fans and it not being Noctuas problem ( the poster had asked and Noctua had pointed the finger ).
Touch wood the fan has not gone off since, I am keeping an eye on the situation, it's a Noctua NF-A15 PWM Fan - four wire.
I truly believe that there are people on this planet who should voluntarily remove them selves from the gene pool.
Maximus IV Extreme Z/16G/2600K, Rampage V Extreme Edition 10/32G/6900K, G751JY-T7042H
Zenith Extreme Alpha/64G/2950x , X399 Prime A/32G/1900X
Power Mad Mu ha ha ha