iMac won't start after attempted reinstall

Discussion in 'Mac Basics and Help' started by rahinco, Mar 26, 2013.

  1. macrumors newbie

    Joined:
    Nov 8, 2009
    #1
    My 2009 27" iMac will not boot up. I was trying to wipe and reinstall the operating system (mountain lion) but it ask for a CD which I didn't have, so I turned it off meaning to try again later.

    When I turned it back on, it no longer returns to the install prompt, just the greyed out no entry symbol.

    I tried putting a Snow Leopard CD in but it had no effect and the CD is stuck inside now.

    I've also tried holding down some key combinations I googled, but those had no effect either.

    Any idea what I can do about this?
    Thanks
     
  2. macrumors P6

    Weaselboy

    Joined:
    Jan 23, 2005
    #2
    So you had ML on there and tried to reinstall?

    Try holding the command-r keys both down when you boot. That should get you to a recovery screen and from there you can reinstall.
     

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