Most of the keyboard keys do not work due to poor contact or system problems. Don’t rush to change the keyboard first. 1. Check the keys themselves: Try to press the keys lightly. Use alcohol to clean the shaft or contacts on the mechanical keyboard with detachable key cap, be careful not to damage the buckle. 2. Troubleshoot system or driver problems: Change the USB port or computer to test, enter the device manager to uninstall and reinstall the driver, and update the system patches. 3. Check Accessibility settings: Turn off the Filter Key or Sticky Key options in Windows or Mac. In most cases, it can be solved by cleaning, changing interfaces, and closing the auxiliary functions. If it really doesn't work, consider replacing the keyboard.

Some keyboard keys do not work, which is quite annoying, but most of the time it is not a big problem. It may be just bad contact, dust accumulation, or abnormal system identification. Don't rush to change the keyboard first. Try the following methods, which can be solved in most cases.

Check if it's a problem with the key itself

Some keys do not respond when pressing, which may be because the keys are stuck, dirty or have poor internal contact. You can try to press it a few times to see if it is "stuck". If it is a mechanical keyboard, you can pull off the key cap and use a cotton swab to dip it in alcohol to gently rub the shaft. If you have a thin-film keyboard, don't remove it, as it will easily not be installed back.

In addition, sometimes the contacts under the buttons are oxidized, resulting in poor contact. You can use small tweezers to gently push the plastic snap around the key cap, remove the key cap, and then use an alcohol cotton pad to wipe the contact points on the bottom of the key and the keyboard board.

• Clean the button area with cotton swab alcohol
• Unplug the key cap to check the shaft or contacts
• Be careful not to break the plastic buckles by force

See if it is a system or driver problem

Sometimes it’s not that the keyboard is broken, but that the computer doesn’t recognize it well. You can try changing the USB port first, or plug it into another computer to confirm whether it is a keyboard problem.

If it is a Windows system, you can open Device Manager to see if there are any keyboard devices with yellow exclamation marks. If you have any questions, right-click to uninstall, then unplug the keyboard and let it re-drive.

• Change the USB port or computer to test
• Uninstall the reinstall driver in the device manager
• Update system patches to ensure driver compatibility

Check if "Filter" or other accessibility features are enabled

Windows has a "Filter Key" function that ignores short or repeated keys. Sometimes if you accidentally press the Shift key for too long, the system will automatically turn on this function, resulting in some keys not responding.

You can turn off the Filter key in "Settings > Accessibility > Keyboard". Mac users can also check for similar options in "System Settings > Accessibility > Keyboard".

• Windows Path: Settings > Accessibility > Keyboard
• Mac path: System Settings > Accessibility > Keyboard
• Try turning off "Filter Key" or "Sticky Key"

Basically that's it

In most cases, cleaning, changing the interface, and turning off the auxiliary functions can solve the problem of the button not working. If it really doesn't work, then consider changing the keyboard. Mechanical keyboards have a long life, but they also need to be cleaned regularly; membrane keyboards are cheap but prone to aging, and it is normal to fail the keys after being used for a long time. Don’t panic when you encounter problems, just check them step by step.

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