Many people request me whether replace a keyboard is possible. Yes. it is possible to replace individual keys on your laptop's keyboard! Note that the same laptop model can have several different types of hinge mechanisms under the key. Some colors in the pictures may differ for your model. That is fine, what matters most is the shape of the hinge piece. Now, there is a guide to repairing your laptop or notebook's keyboard

Step 1: Orient the hinge
The plastic hinge mechanism must be oriented as shown for it to fit onto the metal keyboard hooks.

Step 2: Hook the hinge onto the base
Hook the inner top edge of the hinge over the top metal hook on the base of the keyboard.

Step 3: Secure the hinge into place
Snap the bottom of the hinge into place, one side at a time. This may take a bit of pressure. In this example, the bottom right side is being secured first. The bottom right and left sides of the plastic hinge should be clipped between the two metal notches protruding from the base of the keyboard on each side. You can now check that the hinge works by flexing it up and down; it should pivot easily at it's axis.

Step 4: Press the key into place
Align the key on top of its place on the keyboard, and press down evenly. All four corners of the key should click into place.