This free online Keyboard Test helps you quickly check if all keys on your keyboard are working correctly. As you press each key, it will be highlighted on a virtual keyboard display, allowing you to easily identify unresponsive (dead) keys, sticky keys, or incorrect key mappings (ghosting). This tool is useful for diagnosing keyboard hardware issues, testing a new keyboard, or ensuring functionality after a spill or cleaning.

Common Keyboard Issues & Fixes:

• Some Keys Not Working:
  • Debris: Dirt or crumbs under the keycap can obstruct contact. Try cleaning your keyboard with compressed air or by carefully removing keycaps (if designed for it).
  • Driver Issues: Keyboard drivers can sometimes become corrupted. Try reinstalling or updating them via your operating system's Device Manager.
  • Hardware Failure: The key switch itself might be broken. This might require professional repair or keyboard replacement.
  • Connection (Wireless/USB): For USB keyboards, try a different port. For wireless keyboards, check battery levels and the receiver connection.
• Sticky Keys (Hardware):
  • Spills: Residue from sugary drinks is a common cause. Clean carefully around and under the affected keycaps with isopropyl alcohol (ensure keyboard is off/unplugged).
• What Is Sticky Keys:
  • What It Is: A Windows accessibility feature that allows modifier keys (Shift, Ctrl, Alt, Windows key) to remain active after being pressed, eliminating the need to hold multiple keys simultaneously.
  • Why It Prompts: Windows shows the Sticky Keys prompt when Shift is pressed 5 times in succession, which can happen during gaming or fast typing.
  • Turning It Off: To disable the prompt permanently:
    1. Open Windows Settings → Accessibility → Keyboard
    2. Find "Sticky Keys" or "Use Sticky Keys"
    3. Turn off "Allow the shortcut key to start Sticky Keys"
    4. You can also disable it from the prompt by clicking "Go to Settings"
  • Who It Helps: This feature is valuable for users who:
    • Have difficulty pressing multiple keys simultaneously
    • Experience hand fatigue or limited mobility
    • Use one hand for typing
    • Have temporary injuries affecting keyboard use
• Keys Typing Wrong Characters:
  • Language Settings: Check your operating system's input language settings. You might have accidentally switched to a different keyboard layout.
  • Num Lock/Function Keys: Ensure Num Lock is appropriately set if number pad keys are misbehaving. Some laptops require pressing an 'Fn' key to access certain functions or characters.
• Keyboard Not Detected:
  • Connection: Re-plug your USB keyboard or re-pair your wireless keyboard.
  • Drivers: Check Device Manager for driver issues.
  • BIOS Settings: In rare cases, USB keyboard support might be disabled in the computer's BIOS/UEFI.

Use this keyboard tester to pinpoint problems and get your typing experience back to normal.