Keyboard Not Working? 8 Fixes to Try

A keyboard that has suddenly stopped working or where specific keys have stopped responding is one of the most frustrating computer problems because it blocks you from doing almost anything else. This guide covers 8 fixes in order from quickest to most involved. Work through them in sequence and most keyboard problems will be resolved within 10 minutes.

First step: confirm exactly which keys are not working by testing your keyboard at techtester.online/keyboard-checker/ this takes 60 seconds and tells you precisely what the problem is before you start troubleshooting.

Fix 1 – Unplug and replug the keyboard

For wired keyboards: unplug the USB connector from your computer, wait 10 seconds, and plug it back in. Try a different USB port if available. Avoid USB hubs and plug directly into a port on the computer chassis. Windows and macOS will reinstall the keyboard driver automatically when you reconnect. This resolves a surprisingly large proportion of sudden keyboard failures.

For wireless keyboards: remove and reinsert the batteries or charge the keyboard via USB. Remove the USB dongle and reinsert it. If using Bluetooth, forget the keyboard in your Bluetooth settings and repair it from scratch.

Fix 2 – Restart your computer

A driver conflict, a frozen input service, or a Windows Update that has partially installed can all cause keyboard input to stop working. Restarting clears all of these. If the keyboard is completely unresponsive and you cannot navigate to restart, hold the power button for 5 seconds to force a shutdown, then power on again.

Fix 3 – Check for stuck or toggled keys

Certain keys toggle modes that affect how other keys behave: Num Lock controls whether the numpad types numbers or controls the cursor. Caps Lock makes all letter keys uppercase. Scroll Lock changes how arrow keys work in some applications. Filter Keys (Windows accessibility feature) can cause keys to require longer presses to register. Check that none of these are accidentally activated. On Windows, Filter Keys can be disabled in Settings → Accessibility → Keyboard.

Fix 4 – Update or reinstall the keyboard driver

On Windows: right click the Start button → Device Manager → expand Keyboards → right-click your keyboard → Update driver → Search automatically. If an update does not help, right-click → Uninstall device, then disconnect and reconnect the keyboard Windows will reinstall the driver automatically. On macOS, keyboard drivers are managed by the operating system and are updated with system updates. Go to System Settings → General → Software Update and install any available updates.

Fix 5 – Clean the keyboard

Debris under keycaps is the most common cause of individual keys failing. Turn the keyboard upside down and gently tap it to dislodge crumbs and dust. Use compressed air to blow between the keys. For specific keys that are stuck, use a keycap puller (for mechanical keyboards) to remove the keycap and clean the switch area with a dry cotton swab or a swab lightly dampened with isopropyl alcohol (90%+). Allow to dry fully before reconnecting.

Fix 6 – Test on a different computer

This single test tells you definitively whether the problem is the keyboard hardware or your computer’s software and settings. Plug the keyboard into a different computer and test the same keys. If they work perfectly on the other computer, the fault is with your original computer’s drivers, USB ports, or settings not the keyboard. If the same keys fail on the other computer, the keyboard itself is faulty.

Fix 7 – Check keyboard language and layout settings

If keys are working but typing the wrong characters, the keyboard layout setting in your operating system does not match your physical keyboard. On Windows: Settings → Time & Language → Language → click your language → Options → confirm the correct keyboard layout is selected. On macOS: System Settings → Keyboard → Input Sources → confirm the correct layout is shown. This is especially common after Windows Updates which occasionally reset keyboard layout settings.

Fix 8 – Check for liquid damage

If any liquid has been spilled on the keyboard even a small amount this is likely the cause. Immediately unplug the keyboard. Turn it upside down to drain as much liquid as possible. Allow it to dry completely for at least 48 to 72 hours before reconnecting. Do not use heat to speed up drying this can damage the internal electronics. Rice is not effective for keyboards openair drying at room temperature is better. After drying, test each key with the online keyboard checker to identify which keys, if any, remain affected.

When to replace the keyboard

If you have worked through all 8 fixes and the keyboard is still not working correctly, the fault is hardware that cannot be fixed without component level repair. At this point, replacement is the most practical option. Before buying a replacement, use the keyboard checker one final time to document exactly which keys have failed this information is useful for deciding whether a partial fix (cleaning or switch replacement) might be worth pursuing.

Test exactly which keys are failing right now free, no signup: techtester.online/keyboard-checker/ Also see: How to test your keyboard online our complete testing guide.