Laptop keyboards are fairly reliable, but keys can fall off every now and again during periods of intense use. Replacing the keys on your HP laptop will enable you to save money, avoiding the cost of having to purchase a full replacement keyboard. This can be quickly done by even a complete computer novice, as long as you are patient and gentle throughout the operation.
Align the metal retainer over the missing key on the keyboard. This will be simple, as the retainer will only align one way.
Set the retainer gently down on top of the hole in the keyboard.
Place the key atop the retainer and press down evenly with escalating force until you feel the key snap back into place.