I just bought a mini-ITX host with an ASRock A75M-ITX
and powered by an AMD A8-3850.
Even after upgrading the BIOS to the latest release and changing the CPU settings in the H/W Monitor section from "Full On" to "Automatic", the CPU fan is constantly running at full speed.
The fan is connected to the mobo with a four-wire connection (Black, yellow, blue, red). The four-pin connector can be seen in the upper right-hand corner
("CPU FAN") next to the three-pin connector ("CPU FAN2").
Before getting a hardware solution, is there something I could try in software (Windows 7) to regulate its speed?