Origineel bericht door: Tia Fulton ,
I had the exact same problem for months! I didn't even know it had been dropped or dented on the corner on the screen. Upon reading yours and another post I closed my Macbook, FOUND THE CORNER WITH THE DENT (WHAT?!?!), pressed down on the dented corner and vlola, problem solved! Thanx for this post. I hope this quick fix lasts. It has saved me a bundle!