I lock fan speed through catalyst. I can reboot PC and fan speed will still be locked. But after hard reset or BSOD fan speed isn't locked. If i turn it on and reboot PC, it is turned off again. So it works until hard reset or BSOD, after that i have to turn it on everyday or install newer version of drivers.
MB: Gigabyte GA-M720-US3
CPU: Phenom II x4 920
RAM: 4 GB x2
GPU: Sapphire Radeon 7850 2048 MB
Sound: Asus Xonar DS
HDD: 2 TB seagate
OS : Windows 10 professional x64