To reattach a laptop key:

1. Turn off laptop
   Turn off the laptop before detaching any keys.
2. Unplug laptop
   Unplug any cables connected to the laptop before proceeding with repairs.
3. Remove keycap
   Using a tool such as tweezers, gently pry the keycap from the keyboard.
4. Disconnect hinge clip
   Remove the metal hinge clip that is attached to the base of the keycap.
5. Reattach hinge clip
   Place the hinge clip back into the keyboard and connect it to the laptop's keyboard circuit board.
6. Secure the keycap
   Place the keycap back onto the laptop keyboard and press down firmly until it snaps back into place.
7. Test the key
   Once the keycap is back on the laptop keyboard, test the key to make sure it works properly.