Aporte original por: jhead517 , 20/12/17

Título:

How to install the operating system I have a question mark

Texto:

I have tried the command r and started the internet recovery mode. and then the screen goes black and then white and stay a blank screen.  Can anyone tell me what I need to do??

Thanks in advance

Dispositivo:

MacBook Pro 15" Unibody Late 2011

Estatus:

open