How can I stop my mom from doing this immature crap?

Okay, so I live with my mom unfortunately. She always treats my stuff like crap, and is always breaking my things. Before I go to work, I shut off my computer. I come home and find all my cords yanked out. She has done this so many times, that my audio Jack in the back hardly works, and I’ve already gone through one video card because of her. She does this whenever she gets pissed. Most of the time I have no idea what causes her anger. I tell her to stop but she says if I don’t like it then I can get out. I want to move out. However, I just started a new job. Is there a way that I can put a lock on the cords in the back so she can’t yank them out anymore?