PowerPC :: IBook G4 Suddenly Shuts Down With No Warning
Nov 5, 2007
I was hoping you could get me started in the right direction. My wife has an iBook G4 which lately, while using a full battery, just turns off suddenly. There is no warning and it never does it when it's plugged in. The battery looks like it's almost fully charged - at least that's what the meter in the menu says, so I don't know what's going on.
Could you possibly give me some steps to go through to try and figure this out?
The first step she wants to try is to get a new Intel MacBook, but I'd like to try a couple of other things first!
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Dec 26, 2009
my daughter bought a used ibook g4 15" and it worked for several months before developing a maddening habit of shutting down without warning. I've read other threads about this with ibooks but they say it happens only when the battery is operating and doesn't happen when plugged in. My daughter's does it either way and will only stay on for ten or so minutes most times before shutting down. It makes the machine unusable. We've checked the power supply and the power input board. Is this a logic board issue? She paid $450 for the computer but the prices have come down and it might not be worth fixing. I can solder and can get into the logic board if someone can tell me what to do.
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Oct 7, 2007
My school-computer (iBook 14" 1,42 Ghz G4, running OSX 10.4.10) has developed some unpleasant habbits lately. With lots of batterycharge left, 28-50%, it shuts down without warning. I try to restart it, and it gets to various stages of booting before shutting down again. It won't run untill i plug in the powercable, and then it starts of from almost half full charge. I did a bit of searching on the forums, and installed coconutbattery with the attached (depressing) result. Tried resetting the pmu, which didn't stop it from shutting down on me again 46 mins later. Does this mean I need to replace the battery?
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Mar 1, 2007
I have a Dual 2.0 Powermac G5 that has been shutting down without notice. It first started doing this every couple of days. I'd have to let the computer sit for a few hours before it would run again. Now it does it more and more frequently and stays running ofr less and less time. As of now, it will only stay on for 15 minutes before suddenly shutting down.
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May 28, 2007
Two days ago my iBook G4 (about 18 months old) has started to shut down instead of sleeping when I close it or when I select "Sleep" from the menu.
Strangely enough, it seems to only happen when I have iTunes open before I try to put the computer to sleep.
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Jul 24, 2008
I have this iBook G4 and the wierdest thing is happening. When it is on and you bump it or move it a little it just shuts off like a hard shut down. Has anyone else out there heard of this problem or does anyone know how to fix it?
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Aug 2, 2009
This is about another Mac Laptop.
It is an Ibook G4 1.42 Mhz. It will run well when plugged in. Though when on battery it will just shut down ever so often. Like every 30 minutes and then more often after that.
I was thinking low battery or bad battery. But I put in a new battery and then it did it still?????
What ideas do you have for this??
I did a test on the battery and I do know it is pretty bad. But I do also know I tested this book with a new batter and it still abruptly shuts off completely.
When I sign back on the clock has to be reset each time.
Besides that.. Everything is good.
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May 25, 2010
I have an ibook G4 14" 1.42ghz.I have it plugged into a power adapter almost always. It has been plugged in in both instances/I recently put it to sleep and when I return anywhere from 15 minutes to a couple hours it is shut down. I have a heck of a time getting it to power on. It took me several times, anywhere from 3-6 times to get it to turn on.
When I turn it on it goes through the usual loading procedures and after loading a window pops up saying the date and time are wrong and could cause applications to act erratically. The date ends up being 1969 and sometimes the time is wrong.
I have fixed the date and it still happens.
I don't know if this has affected or led to this but my battery has been shot for a couple months now and occasionally (probably 1-2 times a day) the power adapter (a cheap copy of apple's) would become unplugged from the laptop prompting the message stating you are on reserve battery and that the computer will go to sleep soon.
Does anyone know what is causing this? How much would it cost to fix it?
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Nov 25, 2005
I have done all those PMU resetting stuff. The problem is that my iBook (1GHz, 768MB RAM, Tiger 10.4.3) keeps shutting off when I run it on battery. While plugged in there doesn't seem to be a problem. Here's what I've found out: This seems to happen only when I run the iBook from the battery. There is no pattern as to when it will happen: It might be fully charged, at 70%, 50%, etc. There are no warnings: The iBook just dies
To restart it I have to plug in the charger, I can't start it from the battery after one of these sudden deaths
If I press the battery indicator after a crash, it doesn't show any charge - no green lights
When I restart the machine the battery indicator will work, and it show's a charge in Tiger as well
I've done all that PMU resetting, PRAM resetting, etc. Doesn't work. Any ideas as to what this could be? Bad battery?
One more thing: I've run the hardware test, and it doesn't come up with anything at all.
Coconut Battery shows that my battery should hold a charge as well. Max charge is still at 3500mAh, 18 months and 750 cycles after I got the iBook.
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Nov 27, 2006
My wife has a three-year old iBook G4 and yesterday while she was doing some work, the screen just went black. By the time she brought it to me the machine was shut down. I hit the power button and it started to boot up, but about five seconds later it shut itself down again.
I kept playing with it and I was able to get back in to OS X and I played with it for a few minutes and all seemed fine. I then shut the screen and put it to sleep, then when I tried to wake it back up it shut itself down once again.
After a few more tries of getting it back in to the OS I was able to get all her files off the hard drive, but the problem is still there.
My guess is that it's the logic board, but that's just a guess.
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Oct 27, 2007
I recently purchased an iBook used from someone locally. I got a good price because he said the battery was weak. However, I want to make sure that's actually the case. The power cord connection is not loose.
Coconutbattery says my battery is 36% health, but it also says it's not plugged into the charger when it actually is, so I don't know how reliable this program is. It says my mac is 27 months old, i have 367 cycles on the battery... etc. And I am running Tiger.
The problem is that the power meter on the top bar will say i've got a full charge... so I run the computer (on battery) down to about 60% according to the meter, but the computer instantly shuts off. I try to reboot, and it shuts off while rebooting. It's like the battery works fine and suddenly dies. I get about 30-40 minutes use out of the battery.
Is this the battery or do I have other problems? This only happens when using the battery.
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May 9, 2008
My iBook G4 is 3 years old. I have 2 problems: My latest problem is that it won't charge the battery. I bought a new Ac Adaptor, and I used my battery and my adaptor in another G4 and it charges, but not in my computer. So I know the problem is INSIDE my computer. My father replaced the.DC-inboard when the pin off of my old charger broke off inside the computer.
2.) Now the computer won't turn on. If it does turn on it shuts off 20 seconds later.
There is no warranty, I don't know where to start with fixing it since I can't get it to stay on.!
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May 6, 2010
I was given an old ibook G4, with a borken hard drive.
since it would boot from a firewire drive on mac os X 10.4 ppc, I decided to change the hard drive, which i had never doe for a laptop. I had a very similar 40 Gig toshiba IDE drive from an old laptop, opened the ibook and changed the drive.
everything works, the mac boots fine, sound, video etc, yet I realised that it had one rather serious issue. It shuts down when moved / tapped, even very lightly, and this is problematic for a laptop. I was considering buying an airport extreme for it, but now I'm afraid this might not be mendable, nd i'm reconsidering.
what could be wrong ? is there somekind of shock sensor that could have been damaged ? I put back all the screws, and only changed the drive and proceeded cautiously, but maybe something was damaged- what could be causing this, is there a specific area I should focus on ?
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Jul 26, 2008
Purchased this notebook used, but very nicely cared for, excellent condition. I ran the Apple Hardware Test and everything passed including the logic board.
The battery has 500+cycles. The problem is laptop shuts down at 50% or less of battery. Clock is wrong at startup but is correct a few seconds later.
Runs forever and very nicely on ac power.
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Jan 11, 2010
My iBook G4 crashed on me one night, and the only way I could turn it on again was to unplug the power cord from my computer, turn it over, remove the battery, put the battery back in, plug the cord back into the computer, hold down the start button, and it would restart. Although, when it restarted, the fan would go on first, and then the computer would make the normal start sound. Some times the finder would be on the screen after I restarted it displaying a quick link icon of the hard drive. So after a few weeks, it did it again, then a few days, and then it got to the point where I had to keep my computer in the same position otherwise it might shut down.
Now, if the power cord is green everything is fine, but if I move my computer and bump the cord into the wrong place it turns from green to bright red, makes an evil buzzing sound, and in three seconds the computer shuts off and I have to restart by using the method above. If or when the power cord goes bright red I do have 3 seconds to pull out the cord before it shuts down. I then sleep the computer, put the cord back into the computer, and move the cord around until it is green again.
I took my computer to a mac genius, and when he looked at the crash report he said it was frequent, but not caused by the battery and couldn't tell me what was the exact problem. I bought a brand new power cord, but I still couldn't move the computer around to much or it would shut down.
1.) Has anyone ever heard of this happening? And if so, what causes it to be so touchy?
2.) What can I do to fix it myself?
3.) If I send it in, will they be able to fix it so that it is perfect again without having to spend more than the money assessed?
I would like to try to have it fixed. At this juncture, my only option is to send it in for $280 and hope they can fix the problem that no one seems to know what is the exact problem, or even where the problem stems from. I should add here that the battery is fully charged, and the report says it can hold about 1 hour of life, although it's more like 30 minutes, and then without warning to plug in or risk shutting down (like it used to give me) it will shut down.
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Mar 19, 2007
After never having done so in the past, my 1.33 12'' ibook has suddenly started rejecting all CDs it's given. Both new and old data CDs are turned away, and yet it accepted a DVD I tried a few days ago. What's causing this?
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Aug 28, 2010
The trackpad on my iBook G4 1.44ghz stopped working this morning! At first it went stuttery. I temporarily solved this by plugging in a mouse- without using the mouse itself, this seemed to make the trackpad responsive again.
After letting the iBook go to sleep, the trackpad doesn't work at all; nothing I do seems to make it respond. I've tried resetting the PRAM and NVRAM, but this hasn't done anything.
Is there anything else I can do, short of buying a new trackpad?
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Dec 10, 2014
Ever since I updated to Yosimite - my MacBook Pro is shutting down many, many times a day w/o warning. How can this be fixed?
Info:
MacBook Pro (13-inch Mid 2009), Mac OS X (10.1.x)
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Sep 14, 2009
I've been having trouble with my new iMac that i purchased recently (26th of August actually). Whenever I'm doing something CPU intensive, the machine just shuts off, but usually it's not right in the middle of whatever I'm doing, it's after I close the application. For example: I was playing SimCity4 the other day, pretty old game to cause this problem I would think. As soon as I exit the game, the system shuts off. No warning, nothing, just shuts off. This will happen when i close VMs (it actually happened yesterday while I was running the VM), etc. So I've reset the SMC/PMU, PRAM/NVRAM, and I've even reseated the RAM. Still the same problem. I've taken it in to a repair center in town, hoping I'll get it back by the end of the week. Does anyone have any idea why this would be happening?
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Dec 1, 2008
Laptop shuts down when the battery is at 35% with no warning! Any idea of what to do?
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Jun 3, 2014
My 1-year old MacBook Pro Retina shuts itself without giving a warning when the battery is at 5-15% of capacity. Idk what to do about it.
Info:
MacBook Pro (Retina, 13-inch, Early 2013), OS X Mavericks (10.9.3)
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Sep 23, 2006
Ever since I sold it here on MR and got it back, there has been a problem with my 12" Dual USB iBook G3 500MHz's screen (lord, that's a long name). Whenever the screen is tilted back farther than 45 degrees or so, the backlight shuts off. I can open the casing and fix it if it's possible. Does anyone know what the problem with it is? I'm trying to get it fixed up and ready to sell back to my friend as his first Mac, and I'm trying to get every problem resolved
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May 16, 2012
My wife's MacBook Pro suddenly displayed a warning that the computer needed to shut down and restart. It shut down alright but won't restart.
Info:
MacBook Pro, Mac OS X (10.7.1)
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Mar 19, 2010
This started about 2 days ago, there was no apparent signs of such a thing going to happen.
My MacBook suddenly shuts down in the middle of my work. Shut down as in a sudden shut down, as if the battery was removed. There is no shutdown process, the whole screen just goes black. I've realized that this happens more recently when watching youtube videos, playing flash games etc.
Example : Computer dies in 10 minutes when watching videos/playing games. Computer dies in a few hours or NEVER when just typing, surfing.
It doesn't seem to be a battery problem. I've removed the battery and had my Macbook run on the Charger before, and it still died on me...
Battery Information:
Battery Installed:Yes
First low level warning:No
Full Charge Capacity (mAh):4390
Remaining Capacity (mAh):2128
Amperage (mA):-1720
Voltage (mV):11081
Cycle Count:495
Mac OSX 10.4.11
1.83 GHz Intel Core 2 Duo
1.25GB 667 MHz DDR2 SDRAM
I run bootcamp, same problem on my other operating system
Hardware Overview:
Model Name:MacBook
Model Identifier:MacBook2,1
Processor Name:Intel Core 2 Duo
Processor Speed:1.83 GHz
Number Of Processors:1
Total Number Of Cores:2
L2 Cache (per processor):2 MB
Memory:1.25 GB
Bus Speed:667 MHz
Boot ROM Version:MB21.00A5.B07
SMC Version:1.13f3
Serial Number:4H7110U8WGK
Sudden Motion Sensor:
State:Enabled
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Apr 6, 2012
It just suddenly shuts off and I need to turn it on again
Info:
MacBook Pro, Other OS
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Apr 23, 2012
I have an old g4 , the kind shaped like half a golf ball, which starts up and then quits at different places during the process. Sometimes with the gray screen and Apple logo, sometime later when the OS has fully installed,but fails quite rapidly after that. Then tries to reboot itself with varying degrees of failure.
Info:
mac g4, Mac OS X (10.4.9)
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May 20, 2012
My imac suddenly shuts down while on line. It has to be unpluged for a couple of hours before it will restart. Could it be the battery dying?
Info:
iMac, Mac OS X (10.6.8)
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May 25, 2009
I received my new iMac on May 20. It is a 3.06 with an ATI card. I have not had much time to use it until this evening. I had been been setting up some bookmarks in Safari and then was working on a spreadsheet for about an hour when it suddenly shut down. The power strip in which it was plugged in still had it's light on. The iMac is the only item plugged into the strip. I then felt around the screen, the bottom section was cool but the top was rather warm.
The temperature in the air conditioned house is 71�F. Programs open at the time were Safari - which was on an idle screen as I had logged out of a site. Two sessions of Finder Entourage Excel - which I was actively using. Is this an over temp shutdown? I recall some people posting the temperature of their Macs. Are there any monitors on the iMac to see how hot it is running? There were no warnings that it was going to shut down.
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Mar 2, 2008
I've had my macbook for about 15 months. i noticed a while ago it had trouble turning off completely when running only on the battery. then a few weeks ago it shut itself off and wouldn't start up again. the power cord indicator was orange, but nothing worked. ordered a new battery, that didn't help. tried a different power cord - nada. i took it in to an apple repair shop and they said something about the internal power connector (i'm not a techy) and took 2 weeks to repair. i've had it back 3 weeks now and the same thing has happened. only this time there is no indicator light on any of the power adapters. and my partially charged batteries do not work on their own either.
any ideas? i don't want to keep fixing the same thing and every few weeks it keeps breaking again. i mean, what's the point in having the computer then, right??
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Feb 5, 2008
Recently my computer has been shutting down for no apparent reason. I needed a new battery so I assumed that this was the reason. Now I've replaced my battery but my computer continues to completely shut down.
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