Small Usb Keyboard Is There A Way To Deactivate Your Laptop Keyboard?

Is there a way to deactivate your laptop keyboard? - small usb keyboard

A touch of my keyboard does not work properly and still is, even if it is pressed. I tried cleaning and ventilation of air to be replaced by luck.Then it without the keyboard, but cost $ 80 to replace the dollar. I ended up buying a foldable keyboard that connects via USB, but not disable the laptop keyboard when a key to what is still a problem in connecting to connect. So is there a way to disable the laptop keyboard?