The external keyboard is not typing normally on a Windows laptop, which is usually caused by connection problems, keyboard layout errors, driver abnormalities, third-party software conflicts or system files corruption. The solutions are as follows: 1. Check the connection stability, try to replace the USB interface or re-pair the Bluetooth device, and check whether the keyboard is physically damaged; 2. Confirm whether the keyboard layout and language settings are correct, you can switch the layout through Win spaces or adjust it in settings; 3. Update or reinstall the keyboard, operate through the Device Manager and re-plug and uninstall the keyboard after uninstallation; 4. Troubleshoot third-party software conflicts, close the input auxiliary software and try to switch to Microsoft's own input method; 5. Run the sfc /scannow command to check the integrity of the system file, and use the DISM tool to repair the system image if necessary.

If your external keyboard is not typing properly on a Windows laptop, such as a mismatch, duplicate, unresponsive, or typing other characters, it is really annoying. This situation is usually not as simple as the keyboard breaks down, and may involve multiple aspects such as driver, system settings, and connection methods. Below are some common reasons and corresponding solutions that you can check one by one.

1. Check keyboard connection and hardware status

If there is a problem with the external keyboard, you must first confirm whether the connection is unstable or the hardware itself is problematic.

• If it is a USB keyboard, try to plug in with another USB port, or switch to another computer to test.
• If it is a Bluetooth keyboard, see if there is a successful connection. You can try "Forgot your device" and then re-pair it.
• Check whether the keyboard is physically damaged, such as water inlet, keys stuck, etc.
• Some mechanical keyboards or keyboards with USB hubs may also lead to abnormalities.

Sometimes it’s good to plug and unplug it. Don’t underestimate this operation, it can indeed solve many problems.

2. Confirm whether the keyboard layout or language settings are correct

This problem is very common: you clearly use Chinese input method, but you type out symbols of American keyboards, or vice versa.

• Open Settings → Time and Language → Language and Region
• Check if there is any keyboard layout you use in the "Preferred Language" (such as English (US) or Chinese (China))
• Click the current language → "Keyboard" → Check if there is any "American keyboard" or other layout, and try to switch or delete unnecessary layouts
• You can also press the Win 空格shortcut key to switch between different keyboard layouts to see if it has been switched by mistake

Sometimes the input method can also cause character confusion. For example, pressing Shift under the Chinese input method will switch between Chinese and English, and may also make you mistakenly think that the keyboard is broken.

3. Update or reinstall the keyboard driver

If there is a problem with the driver, it will also cause the keyboard to react abnormally.

• Press Win X → Select Device Manager
• Find the "Keyboard" option, expand and right-click on your external keyboard (such as "Standard PS/2 Keyboard" or brand name)
• Select "Update Driver" or "Uninstall Device"
• Uninstall the keyboard and plug it back, the system will automatically reinstall the driver.

If you are not sure which device it is, you can also unplug the external keyboard first, then open the Device Manager, and then plug in the keyboard to see which device is new.

4. Check whether there are third-party software conflicts

Some software may take over keyboard input, such as shortcut key tools, game macros, translation tools, input method enhancement plug-ins, etc.

• Try to close or exit some of the input auxiliary software you have recently installed
• If you are using third-party input methods (such as Sogou and QQ pinyin), you can temporarily switch to Microsoft's own input method to test it.
• Check if there are any suspicious background processes in Task Manager

If you are not sure which software is affecting it, try Clean Boot to eliminate the interference.

5. System file corruption or registry problems (advanced troubleshooting)

If you have tried all the above methods, it still doesn't work, it may be that there is a problem with the system file.

• Open a command prompt (administrator permissions)
• Enter the following command and press Enter:

   sfc /scannow

• Wait for the scan to complete, if there are any corrupt files, they will try to repair them

In addition, you can also try to use DISM tools to repair the system image, but this is a little more complicated, so it is recommended to make a backup first.

Basically, these possible causes and solutions are all about them. In most cases, the problem lies in the keyboard layout settings or drivers. It is faster to start with these two aspects. If you really can't handle it, you can also try changing the keyboard to troubleshoot whether it is a hardware problem.

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