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powerbook G4 keeps freezing!

Discussion in 'PowerPC Macs' started by twoodcc, Mar 22, 2006.

  1. macrumors P6


    my 15" powerbook 1.67 ghz keeps freezing and i don't know why. it will freeze when all i have is itunes and maybe ical running. today it froze in class! not good, any ideas? i've barely had it 6 months, if that.
  2. macrumors 601


    Repairing permissions? Reset PRAM? Run FSCK?
  3. macrumors P6


    i have been repairing permissions. how do i reset PRAM? how do i run FSCK?

    i've also verified disk, and it came out ok
  4. macrumors 6502a

    elisha cuthbert

    same thing

    ive had alot of problems with my laptop freezing (and so has my uncle) all we have done is an archive and install and then everything worked fine but since the last time ( after 10.4.2) everything has been fine.
  5. macrumors P6


    well i actually did an archive and install not too long ago, and everything seemed fine until about a week or so ago. i can't just keep doing archive and install every 3 weeks
  6. macrumors 68030

    Does it just freeze and nothing happens? Or do you get a box telling you to restart the computer?
  7. macrumors P6

    IJ Reilly

    No, don't do another install. Download and run this in single use mode. Do you know how to reboot into single user mode?

    If that doesn't help, you've almost certainly got a hardware problem. Have you installed any new RAM lately?
  8. macrumors P6


    it just freezes and i can't do anything. the clock stops, everything. no box or anything
  9. macrumors P6


    thanks, i'll try that. i've never booted in single user mode before, but i'll try to figure it out. i've done the apple hardward test before, and yes i have added more RAM, but not lately. and the RAM passed the hardware tests.
  10. macrumors P6

    IJ Reilly

    Quick instruction: restart, hold down cmd-s until the black screen appears. If you've installed AppleJack, the instructions for running it will appear before the prompt.

    Personally though, I'm guessing a hardware problem. I'd suggest removing that RAM and running it that way for a while.
  11. macrumors P6


    thanks. i ran it. i don't know what all it did though. do i need to do anything else, now that i've booted back up normally?

    i really don't want to take out the ram, i did pay money for it and i want to use my 2 GB's of RAM.

    if i still have problems, do you think i should take it to the apple store?
  12. macrumors 6502a


    Sorry for butting into this thread.

    That is a Top Tip, IJ Reilly - thanks. I have been using a variety of methods for performing all the various maintenance procedures and hadn't heard of Applejack until you mentioned it. Downloaded and ran it (on my PM G4) and --- brilliant!

    Excellent Readme.rtf that comes with the package, including this:
  13. macrumors 68020


    Even though your RAM passed the hardware test, that is still the most likely culprit. You need to take out 3rd party RAM and reinstall the original stick that came with the machine. See if that solves your problem.

    Where did you get the RAM from?
  14. macrumors P6


    well i have installed 2 - 1 GB sticks myself. they are not the same brand, and i know that's not that good, but before, i had one 512 stick that came with it and 1 gb stick i installed myself, and i never had a problem. a few months later i added another 1 gb stick, and it is corsair value select. i bought it at Fry's Electronics
  15. Administrator/Editor


    Staff Member

    Corsair does not guarantee their Value Select RAM to work with Macs...could definitely be the problem.
  16. macrumors P6

    IJ Reilly

    You could download memtest from VersionTracker, and run that. It's a bit of a pain to use, but it does a much deeper test on your RAM than the Hardware Test CD that came with your Mac (which I presume you've already run).

    I realize you don't want to give up your extra RAM, but you really need to remove it, if only as a diagnostic method.
  17. macrumors P6

    IJ Reilly

    Pleasure. I recommend Applejack to the point of being tiresome about it. :)
  18. macrumors 68020


    Any memory with the word "value" in it is a prime candidate for causing problems. I had some Crucial 'value' something or other that was causing problems on my PB a few months ago.
  19. macrumors P6


    thanks, i guess i'll try the memtest. if it passes it then i think the ram is not the problem. let's hope that the applejack fixed the problem. if not, i'll post back
  20. macrumors 68020


    The memory I had passed memtest, but it was sill bad. When I replaced it, all my problems went away.

    Look man, if your Mac keeps crashing, you probably have a hardware problem. If you've reinstalled and it still keeps crashing, then its almost certain.
  21. macrumors P6


    thanks for letting me know that, but i still wouldn't feel right just throwing away a gig of ram. if it passes the tests, i think it should work, and if it doesn't, then there's something wrong with my laptop.

    i did reinstall, but i did an archive and install. we all know that it's better to do a regular reinstall instead, but i will admit that i was suprized at how well i didnt lose anything. much better than windows.
  22. macrumors P6

    IJ Reilly

    Don't throw it away, just take it out. If the Mac stops crashing, then you've found the problem. This should be your first priority!

    Reinstalls of OSX rarely solve any problem that couldn't be solved more easily. OSX is much better than Windows because it doesn't auto-hose -- reinstalling should be the last thing you try.
  23. macrumors P6


    well i still haven't taken the ram out yet. but i still say that it can't be the ram. i think it might be the logic board.

    when it does crash, it usually doesn't crash until it's been on for a few days straight.

    should i just take it in the apple store? if it is the logic board or something, what will happen to it?
  24. macrumors G5


    I'm sorry, but you can't conclude it's not the RAM without actually taking it out. The RAM after all is ON the logic board...

    If you take it to the Apple Store with the Corsair RAM in it , there is a chance they'll just hand the machine back to you with the RAM in a baggie and say "its that nasty third party RAM" - whether it is or isnt. You really want to reinstall the stock Apple RAM before you take it into them.

    What will happen depends if it is still under the 1 yr warranty or the optional 3 yr. Applecare. If it is under warranty, they will fix it if it is a broken hardware problem. If it is out of warranty and the logic board needs fixing, then you are looking at $$$$. Unless the machine falls under the extended warranty for the lower memory socket problem, in which case you might be able to argue that it should be covered.

    Good Luck
  25. macrumors P6


    thanks. it is still under the 1 year warranty. maybe i will take the ram out, even though it just passed the Memtest. it seems like if it passes all of these tests, then it must be the logic board. if take the ram out, and then the problems goes away, it's like i can't put any ram in that slot, and i paid for 2 slots

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