I had to take my laptop apart to fix broken hinges which had been put in at factory was to stiff and it had cut the power connector inside. I replaced the power connector woth a new one and made a few little repairs, put everything back together but the keyboard did not work. After watching this video I redid the ribbon connection under the keyboard more carefully and and it works great. Thanks for posting this video. It was very helpful. This was my first time to work on a Laptop. Feeling great about my first laptop home repair.