Mac taking more than 1 hour to reach login screen and other problems.
I have a 2011 Mac book pro. It is taking more than 1 hour to reach the login screen after I turn it on with appearance of silver screen for a long time.
After logging in or sometimes at the start up some horizontal or vertical black lines appear on the screen.
What could be the real problem for this? I have attached the images.
Please help.
좋은 질문 입니까?