Keyboard recommendations?

Hey,
My laptop is going haywire—it keeps spamming the "W" key and I can't make it stop. Plus, some other letters aren't even working.
Questions:
Is this some kind of virus? (Malwarebytes isn't flagging anything)
How do I kill the built-in keyboard for good? I'm just using an external one anyway.

Probably just a stuck key.
In theory, you can disable the keyboard using an Fn combo—you'll have to check the manual for your specific model.