Infinate reboot on late 2009 i5 imac

Discussion in 'iMac' started by tomcom2k, Jun 22, 2012.

  1. tomcom2k macrumors newbie

    Joined:
    Jun 22, 2012
    #1
    I switched from the bundled 1TB HDD to an SSD when i got the machine.

    I came to sell it last month and went to but the hard drive back in.

    I pulled off the internal DP connect :mad:

    So I ordered a new Logic Board

    Installed the logic board.

    Turned it on, gets to Apple logo and turns off (then reboots).

    Bootcamp boots and run fine.

    Is there something I'm missing or is it a faulty logic board?
     
  2. tomcom2k thread starter macrumors newbie

    Joined:
    Jun 22, 2012
  3. Adam552 macrumors 6502

    Joined:
    May 30, 2006
    Location:
    Liverpool, UK.
    #3
    I'm guessing the EFI is out of date for the OS installed on the hard drive. But I'm not sure.

    Reinstall OS?
     
  4. tomcom2k thread starter macrumors newbie

    Joined:
    Jun 22, 2012
    #4
    Not even the MacOS install disk reliably boots.

    As I said bootcamp from the previous install works fine :(
     

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