Symptoms
- External keyboard doesn't respond at all
- Some keys work but not others
- Keyboard works in BIOS/boot menu but not in Windows
- Two connected keyboards conflict with each other
Likely causes
- CommonLoose USB or wireless receiver connectionA partially seated connector is a very common and easy-to-miss cause.
- CommonWrong or missing keyboard driverSpecial or gaming keyboards sometimes need their own software to fully function.
- PossibleConflict with the laptop's built-in keyboard or another input deviceCertain settings or software can cause one keyboard to take priority or block another.
- PossibleUSB port issueA specific port may not supply power or data properly.
- Less commonKeyboard hardware failureInternal switch or controller failure can make a keyboard unresponsive.
What to do
- Unplug the keyboard (or its receiver) and plug it into a different USB port directly on the laptop.
- If the keyboard works in the BIOS/boot screen but not once Windows loads, this points to a driver or software issue rather than a hardware fault.
- Check Device Manager for the keyboard and update or reinstall its driver.
- Uninstall any keyboard-specific software and reinstall the latest version from the manufacturer.
- Test the keyboard on another computer to confirm whether it's the keyboard or the laptop.
- Restart the laptop with the keyboard already connected.
- If wireless, replace batteries and try re-pairing following the manufacturer's instructions.
Tools and parts
- None
Replacement external keyboardSearch: “USB wired keyboard”
When to call a pro
If the keyboard fails on multiple computers and in the BIOS itself, the keyboard hardware has failed and should be replaced.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.