Learn why a laptop keyboard may type numbers instead of letters and how disabling Num Lock resolves this issue, as required for the CompTIA A+ Core 1 220-1101 exam. Understand how Num Lock affects compact keyboards and the steps to restore normal typing.
Table of Contents
Question
A user reports that their laptop keyboard is typing numbers instead of letters. What is the most likely cause?
A. A failing motherboard
B. Num Lock is enabled
C. A malware infection
D. A misconfigured firewall
E. A faulty power adapter
Answer
B. Num Lock is enabled
Explanation
Enabling Num Lock on compact keyboards can cause some letter keys to function as a numeric keypad.
When a laptop keyboard starts typing numbers instead of letters—particularly on keys like U, I, O, J, K, and L—this is almost always due to the Num Lock feature being enabled. Many laptops without a dedicated numeric keypad use a function that turns part of the keyboard into a virtual number pad when Num Lock is on. This is useful for entering numbers quickly but can be confusing if activated accidentally.
To resolve the issue:
- Locate the Num Lock key on your laptop. It may be labeled as “Num Lock,” “NumLk,” or have a small lock icon with a number.
- On many laptops, you must press the Fn key together with the Num Lock key (e.g., Fn + NumLk or Fn + F11) to toggle Num Lock off.
- Some models have an indicator light to show when Num Lock is active.
Once Num Lock is disabled, the affected keys will return to typing letters instead of numbers. This is a common scenario on compact and ultrabook keyboards and is not a sign of hardware failure or malware.
CompTIA A+ Core 1 220-1101 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA A+ Core 1 220-1101 exam and earn CompTIA A+ Core 1 220-1101 certification.