I am having a dell inspiron n5110.It's keyboard light is not on.PLs tell me how to turn it on.
I tried Fn+right arrow but it is not working.
Are you sure you have a backlight keyboard? I could not find an N5110 model with a lighted KB. I did find this answer on the Dell site: The Inspiron R laptops do not come with a lite (lighted) keyboard.
If you would like to take a closer look at the specs on this system, please go to this link and click the Tech Specs tab: