I have done several hinge repairs. Buy small bolts, washers, and nuts. Drill through the bottom of the laptop and run the bolt up into the hole and mark on the bolt where it needs to be cut for top lid to go back on. Then cut the bolt to fit, File the screw end of the bolt a bit so it will fit back into the nut. Then put in bolt and washer on each side and install the nut and tighten it down. It may not look the prettiest but it will hold the hinge in place. Just for good measure it is also a good idea to loosen the hinges a bit by slightly unscrewing the hinge nuts just a little bit, This will take a little pressure off of the hinges. If you want to be thorough then also put a dab of gorilla glue on the bolt you installed. Just don't put too much because gorilla glue expands as it dries.