I need to control the fan speed of my Dell laptop (it has one fan, the CPU fan). I have tried a few software like SpeedFan, HWMoniter, ArgusMoniter, but they don't detect the fan. HWInfo detects the fan, but the fan curve I set on it is not followed by my laptop. I can only control it when I click 'set manual' but the change only stays for 2-3 seconds, before the fan goes back to its original speed. I couldn't find any fan control in the BIOS. What should I do?