So, if you have a loose key on your laptop keyboard, you can either fix it yourself, or take it to a professional. To fix it yourself, you’ll need to remove the keycap from the keyboard. A keyboard keycap is usually made of plastic, and will be either screwed on, or clipped on.A loose left key on a laptop keyboard is a common problem that occurs when a key becomes stuck in position after repeated use. In order to fix a loose left key on a laptop keyboard, turn off the laptop and unplug it from the power source. Carefully remove the key and loosen the screws on the keyboard to access the key beneath.