
I started up my MacBook, and I had a grey screen. PANIC!! Every few seconds, I heard the dvd spinning, and still a grey screen. And more panic!!
After some googling, i found this website, and it works.
Solution:
Insert a business card in the drive and lift it, boot your Mac. The dvd will not spin and after about 10 seconds the disc comes out and your Mac starts normal.
Thx a lot silvermac