I've had my Macbook about a year and half now, and made sure to purchase AppleCare to help make sure it would last at least three years. About 6 months from when I got it I realized that the plastic on the keyboard top was lifting up, there was a visible gap. Sometimes it would be quite noticeable, other times it would flatten out more. I took it to the Apple Store but at the time, the lift was not significant enough for them to do anything about, but the guy that helped me promised to make a note of it so if it got more serious or something else happened they would know I had come in already. Now a few months ago I cracked my LCD, it got hit with a football someone was tossing around my room. I ordered an LCD from eBay and put it in myself. In that process we did scratch up the back of the MacBook, so it's easy to see something went on there. Then just the past few days I saw a crack where the plastic had been coming up, today, I opened it up, and part of the plastic was just missing. There is a bit of the inside exposed, you can't just really see inside, but it is exposed. Now if I go to the Genius Bar, what are they gonna say? Does replacing the LCD void the entire warranty, even for something unrelated? Should I let them know straight up that I replaced the LCD or hope they don't find it, I think they would right? If anyone has any experience with a similar situation I'd really appreciate the advice!