Given how cheap fully functional USB wired external keyboards are at most thrift shops, it's worth having one on hand for testing purposes. Of course if it's a laptop key that's stuck, and you can't unstick it, an external keyboard will still misbehave since the computer will accept input from all connected keyboards. --
Brian -Windows 10, 64-Bit, Version 21H1, Build 19043
The difference between a top-flight creative man and the hack is his ability to express powerful meanings indirectly.