Original post by: Laptop Repair Guy ,
You don't have to glue anything. There are retainers attached to the keyboard and the key has to be attached to the retainers. Do you still have all the key pieces? If yes, you can put it back on the laptop using this [http://www.laptoprepair101.com/laptop/2007/03/20/key-fell-off-keyboard/|laptop key repair method].