Keyboard Test

How to test your keyboard

1. Click anywhere on this page so it has focus.
2. Press every key one by one. Working keys turn green.
3. Any key that doesn't light up may be faulty, dirty, or blocked by software.

Key not working?

• Dirt or liquid: turn the laptop off, blow compressed air, and gently clean around the keycap.
• Filter/sticky keys: on Windows, check Settings → Accessibility → Keyboard.
• Driver: reinstall the keyboard driver in Device Manager, or test in another OS/boot screen to rule out software.
• Browser shortcuts: a few keys (like F11 or Ctrl+W) are captured by the browser and may not register — that's normal.

The page shows the e.key, e.code and keyCode for each press, which developers can use for debugging.

Step-by-step: diagnosing a key

1. Press every key once, row by row; each lights up green on the virtual keyboard when the browser receives it.
2. A key that does not light up is either not sending a signal (hardware) or being swallowed by the operating system (Fn locks, sticky keys, a shortcut app).
3. Hold a key: it should register once and then repeat — if it registers many times on a single press, the switch is 'chattering' (dirt or wear).
4. Press combinations: Shift + letter, Ctrl + letter, Fn + F-keys — multimedia F-keys may need the Fn lock toggled.

Common problems and fixes

Tips and common mistakes

• Test before the warranty ends — most laptop keyboards carry a 1-year warranty, and dealers accept a screenshot of this test as evidence.
• Browsers block a few combinations (Ctrl+W closes the tab, Ctrl+N opens a window) — those keys will not show here; test them in a text editor.
• Testing a second-hand laptop? Also run the Dead Pixel Test and Mic Test.
• Hindi typing shows Devanagari only if that layout is enabled; the key test looks at physical keys, not characters.

Frequently asked questions