I waited a week to do this review. I was a bit scared of buying a refurbished MacBook but I took the risk. When I received it, it came in a blue box with NO protection such as bubble wrap, the blue box is inside the original Amazon box, so when I opened it, the blue box was half way opened.2. It does over heat but all MacBooks do that. NOT ALWAYS DO IT OVER HEAT.3. It is not laggy, the screen works perfect BUT it is hard to clean off along with the keyboard.