So I recently bought a new fan controller, because my old one was worn out and malfunctioning. But now every time I turn on my computer from a shut down, all the fans run at 100% for about 30 seconds. (until the OS loads) my case fans aren't exactly quiet on low, but on full blast they sound like they're hitting mock 1. So I was just wondering, why is this happening? My old fan controller never did anything like this, and fan controllers aren't tied to the OS, so why does it stop doing it after booting?
The fan controller: https://www.amazon.com/Sentry-Controller-Matte-Black-SEN-MIX2-M1/dp/B00DN3IT7M/ref=sr_1_1?ie=UTF8&qid=1484179046&sr=8-1&keywords=sentry+mix+2
The fan controller: https://www.amazon.com/Sentry-Controller-Matte-Black-SEN-MIX2-M1/dp/B00DN3IT7M/ref=sr_1_1?ie=UTF8&qid=1484179046&sr=8-1&keywords=sentry+mix+2