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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
    22,092
    Specs:
    Imac 27" Retina 5K, 512GB flash memory, 3.3GHz, 16GB memory, macOS Sierra beta.
    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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