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It could be due to a missing or corrupted driver. Here are some solutions you can try:
- Check for any uninstalled device drivers in Device Manager. If so, download and install the appropriate driver.
- If your keyboard is an external keyboard, try plugging it into another USB port.
- If your keyboard is a built-in keyboard, try booting your computer in safe mode to see if the keyboard is working properly. If your keyboard is working in Safe Mode, a third-party app or driver may be causing the problem.
Hope it helps.
Kind regards,
Lei