I just got a macbok pro for college to days ago. this is my firs mac and i love it. i just noticed the there is one little dot on the screen that won't go away. i have used the cleaners and its not moving at all. if they background is white it looks red, if its on my blue background it is black. if it is a dead pixel is there anyway to fix it? is it covered under the three year apple care? thanks.