220-802 · Question #140
A Windows user states that every time they hit certain letter keys on their notebook, a number appears instead of the letter. Which of the following items is MOST likely the cause of this problem?
The correct answer is D. The user enabled num lock. On laptops, the Num Lock key activates a numeric overlay mapped onto letter keys, causing letters to produce numbers instead of characters.
Question
A Windows user states that every time they hit certain letter keys on their notebook, a number appears instead of the letter. Which of the following items is MOST likely the cause of this problem?
Options
- AThe user enabled sticky keys.
- BThe user changed the keyboard character set.
- CThe user enabled accessibility options.
- DThe user enabled num lock.
How the community answered
(64 responses)- A8% (5)
- B3% (2)
- C2% (1)
- D88% (56)
Why each option
On laptops, the Num Lock key activates a numeric overlay mapped onto letter keys, causing letters to produce numbers instead of characters.
Sticky Keys is an accessibility feature that causes modifier keys (Shift, Ctrl, Alt) to remain active after being pressed; it does not remap letter keys to numbers.
The keyboard character set or input language setting changes how characters are mapped globally but does not selectively convert specific letter keys to numbers in the pattern described.
Accessibility options such as Filter Keys or Toggle Keys affect keystroke timing and modifier behavior, not numeric key overlay activation.
Laptop keyboards lack a dedicated numeric keypad, so manufacturers embed a numeric keypad function within a section of the letter keys (commonly U, I, O, J, K, L, M and surrounding keys). Pressing the Num Lock key activates this overlay, causing those keys to output numbers instead of letters. Pressing Num Lock again deactivates the overlay and restores normal letter input.
Concept tested: Laptop Num Lock key and embedded numeric keypad overlay
Source: https://support.microsoft.com/en-us/windows/keyboard-shortcut-for-num-lock-on-a-laptop-df951a8b-9f4e-441f-8b26-7db2ac3b07c9
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