A locked Function (Fn) key may sound like a minor problem but can be troublesome for you if you are not aware of the solution. The Fn key allows for additional functionalities in combination with other keys such as increasing or decreasing the brightness of the screen, changing the volume of the speakers or office software shortcuts. This FAQ will provide the solution to this issue.
If your keyboard is producing numbers instead of letters, hold down the Function key (Fn) on your keyboard in order to be able to write normally.
If this doesn't work, try pressing Fn + Numlk or, depending on the model, Fn + Shift + Numlk. On an IBM Thinkpad, press Shift + Scroll Lock Num.
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