Try first following the solution that are suggested here:
MacBook Pro shows circle with diagonal line and won't boot up
If an local Apple-Store (not the Internet;-) is in your city, make a visit to the Genius Bar.
I suppose a Hardware problem
Try first following the solution that are suggested here:
MacBook Pro shows circle with diagonal line and won't boot up
If an local Apple-Store (not the Internet;-) is in your city, make a visit to the Genius Bar.
I suppose a Hardware problem
I can't start my MAC. I have "stop" sign on my screen