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I know there should usually be Fn + some key but on my Envy 17 3D there is no such combination.

  1. I tried Fn + everything, it does not change anything
  2. Tried to look in BIOS, no luck there
  3. Tried to find something like that in the registry - couldn't find anything

Is there a way to enable numlock? It was ON before, but now for some reason it isn't working and instead of number keys I get directional keys and stuff like end, home, etc.

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up vote 5 down vote accepted

As I referred on a comment, most Windows OS since XP have an option called Virtual Keyboard that emulates a keyboard on the main display. It is used mostly for people that can't use a keyboard or that by some chance can't use one. You can from that select Num Lock.

Besides this, check this question, as it might give you a permanent solution.

On Windows XP, you can access it through Start Menu >> All Programs >> Accessories >> Accessibility >> On-Screen Keyboard or through Windows Key + U (source)

On Windows Vista and apparently Windows 8, you can access it through Start >> Control Panel >> Ease of Access >> On-Screen Keyboard (source)(Windows 8 source). Otherwise, you can access it through the previous method, with the difference being that Accessibility = Ease of Access (source)

Both Windows XP and Windows Vista have the same virtual keyboard. The Num Lock is represented by the nlk button.

Windows Vista On-Screen Keyboard

Windows 7 has a different style. I believe that Num Lock is hidden in the Options button.

Windows 7 On-Screen Keyboard

Windows 8 has, besides the On-Screen Keyboard, a new plethora of touch-based interfaces. In the Options dialog, you can check the box to "Turn on numeric key pad." This provides a NumLock button on the on-screen keyboard.

Windows 8 On-Screen Keyboard

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On Ubuntu you can start the Onboard Keyboard there you click on the Numberpad-Button 123 where you have a NumLock

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If your Dell laptop has a LOCK ICON on the kepad 9 key then someone has pressed [F3]+[9]. Press them both together to toggle your numlock.

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