The suggested Fn+SHIFT 1,5,3,2,4 is not working for my Dell Precision M6600

[Maseed]

My Dell Precision M6600 CPU and GPU temperatures are floating around 55 deg C. Need to bring them down but IK8FAN app wouldnt do it. The command you suggested is also not making any effect or giving any screen options like the one you have shown.
Best Regards

 

[V1ctor89]

If your Dell is overheating, then you need to have the cooling system cleaned and the thermal paste changed on the CPU and GPU. If done right and thorough, this can lower the temps with 10+ degrees.