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  1. #1

    Member Since
    Dec 29, 2010
    PowerPC G5 Freeze with Pattern
    I have an iMac G5 1.8 GHz powerpc that freezes and displays a pattern of horizontal and vertical lines over the entire screen. Just upgraded to Leopard few months ago. What could be causing this? Thanks.

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac, i7 4GHz, 32GB memory, 1TB PCI-e storgae StOS X.13.3
    G'day and welcome to the forums, pity under such circumstances.

    Indications are failing logic board and here is a similar post from Apple Discussions, same problem same model iMac:-
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

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