A video review of the Alden 8430P Pro Grabit Broken Bolt and Damaged Screw Extractor 3 Piece Kit and of how to remove a stripped screw with a damaged screw head.
Link to Purchase from Amazon:
https://amzn.to/1cUdxyC
***UPDATE*** Many have asked about stripped screws specifically for laptops – the product above is not ideal but you might consider trying this Micro Stripped Screw extractor instead: https://amzn.to/2bjmMQG