How do I permanently disable my laptops keyboard?

[Kaii :)]

I spilled something on my laptop’s keyboard a while ago and it stopped working, but now it presses the 1 and Tab key on its own and I can’t get it to stop, even when I connect an external keyboard to it. I’ve tried uninstalling the keyboard but it keeps reinstalling when I get back in. It won’t allow me to disable the device and I have no idea why.

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