I have a 2012 27" iMac with a 1TB drive. I am unable to get the machine to start up. I get a gray screen with a status bar. It gets to approx 15% progress and then shuts down again. I have disconnected power and reconnected. No luck. Hoping there might be steps out there to interrupt the start up process and reset???
iMac
Startup your Mac while holding down the Command + R keys.
From there you should be able to access the built in utilities to verify and repair the disk if necessary then restore OS X using OS X Recovery.
Startup your Mac while holding down the Command + R keys.
From there you should be able to access the built in utilities to verify and repair the disk if necessary then restore OS X using OS X Recovery.
Thanks for the quick reply. I was able to get to the OS X Utilities, but when I try to reinstall, both my MacH and Recovery HD are locked and I can't reload. Any tips there?
2012 27" iMac will not start up
