Although it is stated in the manual that the fan speed control softkey would give us four different options to choose from, but my Z480 Ideapad Lenovo on Win8 has a different scenario. Once this softkey is pressed, ONLY the dust cleaning is performed. There is no other option to choose from. I am wondering whether this is an issue with Win8 on this model of notebook or it is about the hardware. Thank you
Features like that often require a software component, in your case that's Lenovo Energy Management for Microsoft Windows 8 (32-bit, 64-bit) - Notebook. Is that piece of software installed?