Can't reinstall OS. Many times tried everything but shows quastion mark. Also pushed command P and R button showed locked. Before when I had option reinstall I tried dick utility and ereased a disk..don't know why after that I can't do anything...
iMac, OS X 10.11
Please carefully read If your Mac starts up to a question mark .
It sounds like a failedHard Drive, can you get a friend to install OSX on an external drive & boot bolding alt key.
It was extremely helpful, it had all the troubleshooting steps. If you don't read the instructions in the steps there is little we can do to help you. I agree with BDAqua, your HD is likely failed. Take the computer to your local independent Apple Authorized Service Provider , have it professionally diagnosed and repaired if you fee it is worth the expense.
I did it. Just clicked power and alt then showed locked firware password. I knew it and I choosed reinstall OSX Capitan. But there is problem now, when it installing on computer OS copy of Capitan...there I got an answer OSX could not be installed on my computer. No packages were eligible for install. Contact the software manufactured for assistance. What I should do next?
There is Only problem now I can't install fully OSX Capitan on my computer because could not eligible..What I need to do? I remember on my IMAC I installed Capitan from internet not from app store maybe thats why I can't install it now...
There isn't was helpfull information about quastion mark. On my IMAC doesn't worked Command and button R. There was still showed quastion mark.
after turned on power CMD and R button even after that shows quastion mark
