Many people have this issue with new ryzen 3000 anyone can help?
This issue is really annoying. My old 4770K with same GPU didn't do this. Now with 3700X it blasts like a jet at the start of boot.
Your best option is to fill out driver feedback, and get everyone else having the issue to fill out driver feedback.
Same issue, I upgraded my ryzen 5 1500x to ryzen 7 3700x, and my MSI RTX 2070 Gaming 8G fans spinned up to 100% in boot! - Asus Crosshair VII Hero