smart fan mode

Hello, as the title says when i enable smart fan mode in bios it just doesn’t spin at all if disable it it just keeps on full speed which is loud. Any help appreciated edit: mobo - b450 a pro max, ryzen 5 3600, 16gb Hyperx 3200, Rx 480 xfx, power supply cooler master 500w, noctua nhu12s. Ive...