MacBook Pro 13" 2011 not booting -- question mark folder
Folder showing ? means, that there is no bootable system found on your hard disk.

Booting in Recovery Mode means, that your HDD is still working.

Disk Utility not showing HDD means, that there is no formatted HDD.

To recover your data try following step:


Shut down computer
Turn on again pressing "T"-Key down till Firewire Icon is shown.
Take another Mac and a Firewire-Cable
Turn off "new" Mac
Plug your "Firewire"-Mac into the "New"-Mac


Hopefully, your "Firewire"-Mac will show up as an external Drive.

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