How to Disable Laptop’s Keyboard on Windows 10 and Only Use External Keyboard?

Question

How can i disable laptop's broken keyboard and only use external usb keyboard? Even disabling and uninstalling, using wrong driver methods are not working?

Unlike desktop computers, laptops come with all the peripherals you could possibly need. A mouse, a keyboard, and a monitor are the three basic computer accessories you need to operate a computer, and a laptop has all three.

As opposed to desktop computers, most laptops are hardwired so that each peripheral cannot be disconnected and replaced on a whim. If the laptop keyboard stops working, either partially or completely, you can't just unplug it and plug in a new one because of this. The laptop's lid will have to be removed, and the keyboard will have to be replaced.

Answer 1

Write to CMD (as administrator) for disabling PS/2 port to disable your internal keyboard:

sc config i8042prt start= disabled

Now restart your computer and your laptop keyboard shouldn’t work.

If you want to enable your internal keyboard again, write to CMD:

sc config i8042prt start= auto

Detailed Solution

1. Disable the Laptop Keyboard Driver

On Windows 10, the latest and greatest in the long line of Windows Operating Systems, it is entirely possible to disable the keyboard that is built-in to a laptop. You can’t really use any computer (which includes laptops) without a keyboard, which is why you need to be sure to have an external keyboard connected to the laptop before you disable the built-in keyboard. To disable the built-in keyboard on a laptop running on Windows 10, you need to:

1. Open the Device Manager. This can be accomplished any one of two ways – you can either right-click on the Start Menu to open the WinX Menu and click on Device Manager, or press the Windows Logo key + R to open a Run dialog, type devmgmt.msc into the Run dialog and press Enter to launch the Device Manager. 
2. In the Device Manager, locate and double-click on the Keyboards section to expand it. 
3. All of the keyboards connected to your computer at that moment in time will be listed under the Keyboards section. Locate the listing for the laptop’s built-in keyboard, and right-click on it.
4. In the resulting context menu, click on Disable. 
5. Click on Yes in the resulting dialog box to confirm the action and disable the laptop’s built-in keyboard. 

If you don’t see a Disable option in the resulting context menu, fear not – you will see an Uninstall option, and you can click on that to uninstall the drivers for the built-in keyboard instead of simply disabling it. Once you do so, you will see a dialog box asking you to confirm the action – click on OK to provide confirmation and uninstall the drivers for the built-in keyboard.

If you do uninstall the drivers for the laptop’s built-in keyboard instead of disabling it, be wary – Windows 10 might automatically update the drivers after detecting the keyboard. If that happens, you will have to make your way back to the Device Manager and uninstall the drivers for the laptop’s built-in keyboard once again.

2. Disable the Service that controls the PS/2 port

If the method shown above didn’t help you, you can alternatively disable the port that controls the data and input of PS/2 Ports as most laptop keyboards are internally connected through that port. We will simply disable the power from that port because there won’t be anything controlling the data of that port once we disable the service. To disable the Service that controls the PS/2 Port, follow the steps shown below:-

1. Click on the Search bar and search for Command Prompt then click “Run as administrator”.  Opening Command Prompt as an administrator
2. Type the following command:
   sc config i8042prt start= disabled
3. Now restart your computer and your laptop keyboard shouldn’t work.
4. In case you want to re-enable the keyboard in the future you can use the following command:
   sc config i8042prt start= auto