My computer freezes

Hello & Hola, Carla!

Well, if you can get some taller feet for the laptop (to give it more space below to cool better - lifters for the little pads on it) that might help. Laptops have other problems, such as little batteries clipped inside, which power the internal RAM when the computer is off - after a while, those batteries (thin lithium cells, often like watch batteries) start to go bad, and can give you the symptoms you're having. (I learned this the hard way, by buying a used laptop with issues!). Power supply instabilities could be another cause...