CPU Fans not working

[OpAdam]

Since I built my pc I have this problem when I start it an error screen comes up and says CPU Fans not working and press f1 for setup so then I get directed to bios and boot it that way and it works and is running on about 42-47 degrees celcius on idle but then when I play games it can go up to 80 and I noticed the fans are running the same speed at 9% load as 80% load.

 

Setup

ASUS ROG STRIX B350-F GAMING

AMD Ryzen 7 1800X

NZXT Kraken x52 240MM Top mounted

G.Skill 16GB (2x8GB) DDR4 2400MHz CL15 Trident Z

ASUS GeForce GTX 1080 8GB ROG STRIX DC3 Gaming

Samsung 960 EVO 250 GB

3x NZXT AER 120MM RGB fans in the front

1x NZXT AER 140MM RGB fan in the back

Seagate Barracuda 2TB 7200RPM 64Mb

Corsair RM750x 750Watt

 

[samcool55]

Check the manual of your motherboard, it should say where the CPU FAN header is located, make sure there's something connected to that (fan of the AIO of the pump, don't really know which connectors the AIO has)

[Technomancer__]

You probably connected the pump on a fan header rather that the CPU fan

[OpAdam]

I had in fact tucked away a cable and forgot about it... My bad.