The BIOS settings are anecdotal with 4 mode (normal, silent, and full manual), and even changing the modes, none affects the fan!
Speedfan detects the fan as not being that of the CPU, even worse, he occasionally crash the PC startup.
Besides the Bios is really bad thought. Basic settings are absent from one display mode to another ...
In addition, sometimes the PC hangs at loading the bios also ...
I have never had such a rotten board. This is really the word.