=== 1. ***Check for Physical Issues:*** ===
* ***Dust or Debris:*** Dirt or dust under the keys may cause them to not register. Try cleaning the keyboard.
** ***Solution:*** Gently clean the keyboard using compressed air or a soft brush.
* ***Sticky Keys:*** If something has spilled on the keyboard, certain keys might be stuck.
** ***Solution:*** Clean the keyboard using a damp cloth with a small amount of rubbing alcohol, or consider removing the keycaps (if possible) to clean underneath.
=== 2. ***Check Keyboard Settings:*** ===
* ***Filter Keys (Windows):*** This feature sometimes ignores repeated or brief keystrokes.
** ***Solution:***
### Go to ''Settings'' > ''Ease of Access'' > ''Keyboard''.
### Make sure "Filter Keys" is turned off.
* ***Accessibility Settings (Mac):***
** ***Solution:*** Go to ''System Preferences'' > ''Accessibility'' > ''Keyboard'', and ensure features like Slow Keys or Mouse Keys are disabled.
=== 3. ***Test on Another Application:*** ===
* ***Test Keyboard Input:*** Open a different app (e.g., Notepad, Word) to see if the issue persists.
** If it works elsewhere, the issue could be specific to one app.
=== 4. ***Try Another Keyboard:*** ===
* Plug in another keyboard (USB or Bluetooth) to see if the issue still occurs. If it works, your keyboard may be malfunctioning.
=== 5. ***Driver or Software Issue:*** ===
* ***Update Keyboard Drivers:***
** On Windows: Go to ''Device Manager'', expand ''Keyboards'', right-click your keyboard, and select ''Update Driver''.
* ***Restart Your Computer:*** A restart may solve temporary software glitches.
=== 6. ***Hardware Failure:*** ===
* If none of the above work, the keyboard could be damaged and may need to be replaced.
=== 7. ***Check with an Online Keyboard Tester:*** ===
* ***Test Key Presses:*** Use an online keyboard tester to check if the keys are registering at all.
** ***Solution:*** Go to a website like [link|https://keyboard-tester.org/|keyboard-tester.org|new_window=true] and press the unresponsive keys. If the keys don't show up, it's likely a hardware issue with the keyboard.