windows 10 – Disabling the built in keyboard and using an external USB keyboard

I spilled coffee on my built in laptop keyboard. As a result, some of the keyboard keys are no longer working. What’s worse is that sometimes it gets crazy and some keys are clicking spontaneously. I bought an external USB keyboard but I’m having trouble getting it to work while the built in keyboard is randomly activating keys. I tried uninstalling the keyboard driver using the device manager but when I restart windows re-installs the default driver automatically. I do not know how to disable the built in keyboard. I tried installing the wrong driver but then the keyboard got even more crazy. Can I just try to remove the built in keyboard?

Thank you