Electricity but no boot:- you heard the sound of the Operating System but you don’t see anything in the LCD. About 90% of the time, Apple computers have this problem. The causes of this problem could be bad I/O controller chip, or bad video chip.
No Electricity at all:-The causes of this problem could be bad voltage regulator, short circuit, open circuit or loose connection. Work with external monitor but does not work with its own LCD: bad video socket, bad video cable, bad back light or bad inverter.
Not Boot:- When you turn on the computer, you only see the question
mark in the mid of the Screen. The cause of this problem should be bad hard
drive, loose connection or bad hard drive controller.
System has blue screen:- Bad hard drive controller, bad hard
drive, bad I/O controller chip set.
Call now for Apple repair center Boynton Beach Florida - 561-877-1746
