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Thread: G4 won't boot

  1. #1
    G4 won't boot

    Member Since
    Nov 28, 2012
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    2
    G4 won't boot
    I took it to the apple store and it booted fine - wouldn't boot from home when I got back home

  2. #2
    G4 won't boot

    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    601
    Specs:
    MacBook Pro 15" 2.8 GHz
    Is it a G4 Power Mac, iMac, iBook etc?

    By not booting do you mean no chime, nothing, or it chimes, you have a display, but the OS fails to load?

    I doubt the Apple store would have been able to assist anyway, as they class all G4 based Mac's as vintage, with no support.
    Steve
    UK

  3. #3
    G4 won't boot

    Member Since
    Nov 28, 2012
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    The G4 mini tower won't boot at home - I press the load button - light comes on - goes off nothing happens. But when I took it in for service - they hooked it up and it booted fine. I thought it was fixed but when I took in back home it wouldn't boot again

  4. #4
    G4 won't boot
    pigoo3's Avatar
    Member Since
    May 20, 2008
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    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    Quote Originally Posted by boldo View Post
    The G4 mini tower won't boot at home - I press the load button - light comes on - goes off nothing happens. But when I took it in for service - they hooked it up and it booted fine. I thought it was fixed but when I took in back home it wouldn't boot again
    Just a thought. Is the PRAM battery dead? Sometimes with some models...a dead PRAM battery can cause problems.

    Next question...What & where is the PRAM battery?? It looks like this (if you don't know):

    or this

    FYI...size DOESN'T matter!!! Just different photo sizes!

    You need to test it with a multimeter for "life".

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5
    G4 won't boot
    louishen's Avatar
    Member Since
    Oct 22, 2007
    Location
    London
    Posts
    8,968
    Specs:
    Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver
    The above was the cause when my G4 had those symptoms, you can get them from Radio Shack
    Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system

  6. #6
    G4 won't boot

    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    601
    Specs:
    MacBook Pro 15" 2.8 GHz
    Just a thought, are you using a display connected to an ADC connector on the graphics card? It so you'll have only the lead going to the G4 and no mains lead. Many times I've seen situations like yours where a short in the display (Formac 17" ADC displays were well known for this) shuts down the G4. If not you may simply have an intermittent power supply. Batteries can sometimes cause problems, although their main problems related to certain LC and Performa systems from way back.
    Steve
    UK

  7. #7
    G4 won't boot
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
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    31,466
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    Quote Originally Posted by techiesteve View Post
    Batteries can sometimes cause problems, although their main problems related to certain LC and Performa systems from way back.
    I agree. Dead PRAM batteries are usually more problematic with stuff from the mid-late 1990's. I have some Centris and early Powermac's (7100, 8100) where dead PRAM batteries can cause havoc!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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