If you've ever found yourself in a situation where you need to use a USB or Wireless Keyboard on your Laptop either because your inbuilt keyboard is not responsive, some keys aren't working or you just like the feel and/or mobility of the USB/Wireless Keyboard and need to disable the inbuilt keyboard so there won't be accidental press(s) from it, you're in luck as I'm going to share with you a working solution for that.
We all know that we can disable or uninstall various devices from device manager. Unfortunately, we can't do that for the inbuilt keyboard which is named "Standard PS/2 Keyboard" in device manager. As whenever one tries to uninstall it, you are forced to restart, at which point the driver will get reinstalled upon booting back to windows.
So here is a workaround to that. We'll intentionally install an incompatible driver for the Keyboard.
Follow these procedures to disable inbuilt keyboard:
1) Disconnect from the internet
2) Detach the USB Keyboard/ Wireless Keyboard
3) Open Device Manager
4) Double Click on Keyboards
5) Right-click on "Standard PS/2 Keyboard"
6) Select “Update Driver”
7) Click "Browse my computer for device software"
8) Select "Let me pick from a list of available drivers on my computer"
9) Uncheck "Show compatible hardware"
10) Choose one e.g Acer => API Ergo USB K/B
11) Restart your computer.
12) Your laptop keyboard should now be disabled
Enjoy using your USB/Wireless Keyboard without interruption from your Laptop inbuilt Keyboard.
