For my MacBook Pro: The hard drive sounds like it powers on, but the display does not show. I have connected an external display nothing appears on the external display. The Apple Store recommends having it shipped in for repair, though I need to back up the hard drive. (1) Is there a way to back up the hard drive while the display to not work? (2) For the display repair, should I ship through the Apple Store or use an Apple-Authorized repair shop? Thank you for any help.