Funtional keys are not working in lenovo - Lenovo IdeaPad Z560 Laptop

Function keys on many laptops are used as the secondary set and the individual functions of the keys have been shifted to the primary functions. Thus, if you press F1 and things are normal, you would get some kind of "help" But if, as in many laptops, the functions of those "F" keys has been reversed you might get an Internet key, a brightness key, some kind of CD opening key, or whatever the manufacture decided. F2, as another instance, is used to trigger "edit" of the current item....but in many laptops pressing F2 just turns off your wireless signal or dims the screen slightly. In those cases the way to access the expected Fkey functions is to hole the Fn key down (at the bottom left of the keyboard) then press the desired F key. Personally I find it nuts to have reversed an PC age old way but I'm not in charge of keeping people happy so it's not happening.

Hope that helps.