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  1. #1

    Member Since
    Dec 30, 2010
    g4 quicksilver mdd 1.25Mhz dual doesnt boot up but fan comes on
    Hi everyone I,m new to the Mac so I need help, I have a g4 1.25Mhz dual processor with 2gb ram running leopard its just started locking up and then wont boot but after about 15-20 seconds the fan comes on full power,any ideas please.

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac, i7 4GHz, 32GB memory, 1TB Blade Drive, OS X.13.5
    G'day and welcome to the forums.

    You are getting power, so perhaps the PRAM battery needs replacing and the Power Management Unit (PMU) reset. Other things to consider include:-
    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!

  3. #3

    Member Since
    Dec 30, 2010
    cheers harry
    Ill check that out and post the result fingers crossed then

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