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To turn on the number lock (Num Lock) on a Dell Latitude E5540, locate the "Num Lock" key on the keyboard, which is typically found in the top row of keys or as a secondary function on the "F11" key. Press the "Num Lock" key to activate it. You may see a light indicator on the key or keyboard itself confirming that Num Lock is enabled. If your keyboard has a numeric keypad, the numeric functions will now work.

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1mo ago

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