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Re: ibook G4 shuts down by itself
You are having a problem with the logic board/power supply. I had the same issue a while back. I hope it is still under warranty as it is around a 500 - 600 dollar fix. If you take it into apple and they take your computer in for a repair and they mess it up, they will replace it with a newer one, which is what happened to me. So I hope you have similar luck, but other wise you might consider upgrading to a newer model just to avoid the cost if it is still not under a extended apple warranty. Which I bet is the case, being it is a G4 (6-8 years old).
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The sign i believe you are referring to is a Kernel Panic, if it is a gray box that dims the screen.
If this is the case, and you have your Mac OS X install dvd, try to boot off of the disc and use disk utility to repair the hard drive.
Blinking ? mark folder means that your OS can't be found. Take out your RAM underneath the keyboard and re-insert and try again. Nothing? Install a different new RAM chip and try again. Nothing? Install your disc 1 install disc, power down, wait a few seconds, now press the power button to turn on, now press and hold the option button, until your disc 1 shows up, select it, and bring your pointer to the right arrow on the screen and press enter. Now your booting from the disc 1. Go to disc utility folder at the top of the screen and select your hard drive and then select repair disc permissions. Then shut down and reboot when finished. Nothing? Your hard drive is fu.k.d-Try re-installing the OS. Nothing? Your hard drive is really fu.k.d-You need a new hard drive. Installing a new hard drive in the iBook is a *****. You may want to pay someone to install a hard drive or you can just get a new laptop.
your having an overheating problem its either your processor or your chipset inside the laptop..let it rest for a while put a cooler pad under your laptop while using it to prevent further damage..i suggest you backup all your data also before it crashes permanently..also bring it to your nearest mac service center...hope this helps
It takes a lot of force to break a charger connector in the charge socket, so the connector socket in the iBook will probably be damaged and needs replacing. Take it to a reputable repairer, or, if you have the skills, you can fit a replacement DC In Board.
Some computer react this way when the logic board goes bad or have a defect in it.
First, Try this:
Remove the battery. Plug back in the power cord, then press and hold down the power button til you hear a loud beep sound. then release it. If the computer starts back up... Then you should be okay.
If not, it may has something to do with the logic board.
Let me know if the above works...
We may can try some other things if not.
Probably the dvd drive is damaged (boot the computer with a bootable cd and see if it works, if not, change the drive), or it might have weak connection in it's slot, remove it and reinsert it in the laptop, see if it works.