my mac pro is not starting up no screen no sound please help me
My mac book 13 is not starting up please help me
MacBook Pro (13-inch Mid 2012), iOS 7.0.3
Go step by step and test.
http://support.apple.com/kb/TS1365
Note: Steps 5 and 6
Step 5
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".