A few keys not registering is annoying but usually fixable without a service call.

1. Test in a different app first

Open Notepad or any plain text editor and try the keys there. If they work in Notepad but not in Outlook, the keyboard is fine — your app has a stuck modifier or a focus issue. Close and reopen the problem app.

2. Restart your laptop

Sometimes the keyboard driver stalls. A full shutdown (not restart) clears it.

3. Check for stuck Function or Lock keys

The Caps Lock or Num Lock LED tells you instantly. If a modifier (Shift, Ctrl, Alt) is stuck on, every key behaves wrong:

  • All keys producing capital letters: Caps Lock is on
  • Letters being interpreted as shortcuts: Ctrl is stuck
  • Number row producing symbols: Shift may be stuck

Tap the modifier key a few times to "release" it. Check the on-screen keyboard for visual confirmation.

4. On-screen keyboard reality check

Open the on-screen keyboard (Start → search "On-Screen Keyboard"). When you press a physical key, the on-screen version highlights it. If a key doesn't highlight, the keyboard isn't even sending the signal — that's a hardware fault.

If it highlights but doesn't type in your app, it's software — try a different app or driver.

5. Dust under the keys

If keys feel sticky, mushy, or only work with extra pressure, dust or crumbs are likely under the cap. With the laptop OFF:

  • Turn it upside down and tap gently
  • Compressed air angled across the keys (not straight down) lifts loose debris
  • For sticky keys: a slightly damp microfiber cloth on the surface — don't soak it

Don't pry off the keycaps unless you know what you're doing — chiclet hinges break easily.

6. Reinstall keyboard driver

If a specific key (Fn, brightness, volume) doesn't work after a Windows update:

  1. Device Manager → Keyboards
  2. Right-click your keyboard → Uninstall device
  3. Restart — Windows reinstalls

Vendor-specific keys (HP, Lenovo, Dell function row) sometimes need the vendor's own utility (HP Hotkey Support, Lenovo Vantage). Reinstall that from the vendor support site.

7. External keyboard as a workaround

If you have a meeting and can't wait, plug in any USB or Bluetooth keyboard. Windows recognizes it instantly and you can keep working while the ticket is processed.

8. When to ticket

Open a hardware ticket if:

  • Specific keys don't register at all (confirmed via on-screen keyboard)
  • The whole keyboard is unresponsive on a fresh boot
  • You spilled something on it — even if it's working now, get it inspected