Locate the light key on your keyboard, likely in the Function ( F ) keys row along the top. The light key resembles three squares with three lines extending from the left side.

If you need to use your F keys on your laptop for an app or game but it isn't working, there are a few solutions you can use to make life easier.

A set of keyboard keys from F1 to F12 that are programmed by the operating system or application to perform some task. The function key can be used alone or in combination with Shift, Control and ...