I believe I just watched the same video you did. He seems to be hitting the laptop in an attempt to get screws out. You can probably avoid this with a magnetic screw driver, and if not, a light tap will not hurt the laptop. However, you can also follow [guide|53617|this guide] in order to get to the HDD, then from there, replacing the HDD is self explanatory. Otherwise here is a [https://www.youtube.com/watch?v=dS5xnXZHjvE|link to the video] I watched just in case it’s different. If you keep good notes, and take pictures of what you’re doing, you wont have to worry about taking it apart into small pieces. Good luck!