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  1. #1

    james_falknor's Avatar
    Member Since
    Sep 16, 2008
    Location
    Denver, CO
    Posts
    41
    Specs:
    eMac, 1GHZ, 1GB Memory, OS X 10.5
    ROM checksum failure. Please help.
    Please help.

    I have a PowerMac G4 AGP, 400 MHz, 1 GHz Memory, 20GB hard drive.

    I am getting two messages at boot up. It happens when I try to boot from DVD or hard drive.

    First: Boot failure (0xf3c481F6)

    Second: ROM checksum failure.

    Does this mean that the processor is fried?

    I've tried resetting nvram and pram to no avail.


    Please help,
    James

  2. #2


    Member Since
    Jan 31, 2008
    Posts
    195
    How many beeps are you getting?

    5 beeps = bad CPU

    The errors you're getting would appear to be a problem with the boot ROM, not the CPU. The boot ROM in a Macintosh is similar to a BIOS chip in a PC. Instead of messing around trying to reset the ROM, I'd take your machine to Apple for repairs.
    iMac G3
    600 MHz
    OS 10.3.9

  3. #3

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    21,711
    Specs:
    Imac 27" Retina 3.3GHz, 512GB Flash, 16GB memory, OS X.11.4.
    First up check the IDE cables to the drive and optical are really firmly seated. It does have a DVD reader as some early AGP came with just a CD. James can you then install another hard drive and see if the machine will boot?

  4. #4

    james_falknor's Avatar
    Member Since
    Sep 16, 2008
    Location
    Denver, CO
    Posts
    41
    Specs:
    eMac, 1GHZ, 1GB Memory, OS X 10.5
    thank you for the responses
    Thank you for your responses.

    Turns out the logic board is dead.

    Nothing I can do.


    Thank you,
    James

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