I do not know how to do any of these things. I'm running a Biostar motherboard
You need to get into the BIOS during the start-up of the computer. In the BIOS on my computer it is under 'PC Health Status'. Then take a look at the CPU_FAN control setting. It will say something like "If the temp is >50 set speed to 100%" - "If the temp is <40 set the speed to 60%". These are settings that you dictate. It may take a few tries to get the optimum for your setup.
Studying the manual will help.