Dead PRAM Battery causing failed startup?

Discussion in 'MacBook Pro' started by bamaworks, Jul 28, 2008.

  1. bamaworks macrumors 6502

    Joined:
    Nov 9, 2007
    Location:
    Lexington, KY
    #1
    Hello all, one of my Al Powerbooks decided to kernel panic twice in the past two days and both times fail to start up afterwards. The symptoms would be that when I pushed the power button, I wouldn't hear the Apple startup sound and it would just sit there.

    Well, after a few tries and some sadness, I decided to remove the PRAM battery card and voila, computer boots up perfectly! This has actually happened twice (removed PRAM card, booted up, then put PRAM card back in, then eventually exact same situation occurred again), does anyone know if a PRAM battery card can possibly wreak suck havok on a G4 running Leopard?

    -James
     
  2. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #2
    Macs store some essential information in PRAM, such as the boot device to use - at least they did prior to the Intel Macs. I'm not sure about those.

    Anyway, yes - replace the PRAM battery, and all should be well again.
     
  3. bamaworks thread starter macrumors 6502

    Joined:
    Nov 9, 2007
    Location:
    Lexington, KY
    #3
    It just seems odd that something so minor can cause a complete system failure... hmmm.
     
  4. matperk macrumors 6502

    Joined:
    May 6, 2004
    Location:
    Milwaukee, Wisconsin
    #4
    Agreed--on a PC all it would do is require you to set the clock, but would otherwise boot fine. Probably something new the EFI firmware does compared to BIOS.
     
  5. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #5
    This can't be it - an Aluminum PowerBook does NOT use EFI. It uses Open Firmware instead.
     
  6. bamaworks thread starter macrumors 6502

    Joined:
    Nov 9, 2007
    Location:
    Lexington, KY
    #6
    I agree, I can't figure it out. When I have the PRAM battery plugged into the logic board I have a system crash within the hour that won't recover without the removal of the PRAM...
     
  7. MacHamster68 macrumors 68040

    MacHamster68

    Joined:
    Sep 17, 2009

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