PowerPC :: IMac G5 Started Randomly Shutting Down When Not Used
Feb 5, 2008
I looked into my issue a little but recently my IMac G5 started randomly shutting down when left unused for a bit but that seems to have stopped as far as I have noted. Now occasionally when it goes into sleep mode it will freeze on the black screen and the fan will go crazy. I plan on buying a MBP, if the update ever comes out, and then ill just completely wipe the IMac and give it to my parents, who still use the original I mac, G3 or something. I read a certain series of I Macs were having motherboard problems, W950 or something, but mine wasn't that serial code.
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Sep 2, 2007
a close friend has a 20' iMac g5. the Computer now shuts downs sporadically and she says it gets a lot hotter any idea what's wrong?
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Sep 21, 2007
My friends iMac G5 just recently has been randomly shutting down. Does anyone know anything I can do to him fix his computer?
I checked [URL] and there seems to be issues with power on some models, but his serial number just misses the infected batch.
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Dec 4, 2014
I have a MacBook Pro. Keeps completely shutting down all the time when its fully charged and at random times when it is at 65% for example. Do I need to get a battery replacement? Or do I have a virus?
Info:
MacBook Pro
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Dec 8, 2010
I purchased a 24" iMac in fall of '07 and up until have had no problems at all. Let me describe the problems I'm having now and maybe someone can tell me what to do to remedy them.
A couple weeks ago it started freezing randomly. The mouse will switch to the beach ball and just spins endlessly. I can move it around but can't really do anything other than that. I have to do a hard reset to get it back to normal. Sometimes a couple programs are open, and sometimes none. It seems like it happens often when I quick switch from one user to another. It will switch, work for awhile, then freeze.
Now, no big deal, annoying, but whatever. But, the other day after doing a hard reset it revolted into a white screen with a flashing folder with a question mark. I did some research and found that I needed to repair the startup disc using the snow leopard disc. I did that and it allowed me to boot it back up normaly but didn't really solve the freeze up issue.
So, that just happened again, so I'll have to boot it up with the disc again and repair the startup disc when I get a chance. It's really beyond frustrating now.
I have repaired all permissions, updated all firmware, made sure the drive isn't full, pretty much everything short of backing up and wiping the drive and reinstalling the OS. Is that what I need ro do now? I mean, I know I need to, but is there something I can do to remedy until I can get around to doing that?
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Mar 12, 2009
So I have an old imac running OSX 10.3.9 and recently it started making a whoosh sound randomly at will. It sounds like a whiffle ball bat missing the ball. Also for no apparent reason it started saying "you have logged in" every time I wake it up. Any clue how to make these annoying sounds go away and or what may have started them?
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Apr 23, 2012
My IMAC with Lion desktop is randomly shutting off.
Info:
iMac, Mac OS X (10.7.3), Lion
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Aug 30, 2014
I have had this for the last few days, so I don't really know what's going on...Â
Anonymous UUID:Â Â Â Â Â Â D4B5793A-92CF-4E5D-33F8-94D77B084C5CÂ Â
Sun Aug 31 00:07:39 2014
panic(cpu 2 caller 0xffffff8002c5220d): "zalloc: zone map exhausted while allocating from zone kalloc.8192, likely due to memory leak in zone kalloc.64 (1440851328 total bytes, 22513266 elements allocated)"@/SourceCache/xnu/xnu-2422.100.13/osfmk/kern/zalloc.c:2494
Backtrace (CPU 2), Frame : Return Address
0xffffff81348c3c70 : 0xffffff8002c22fa9
[Code].....
Info:
iMac, OS X Mavericks (10.9.3)
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Sep 7, 2014
My imac is only 3 months old and has started slowing down, randomly playing music when connected to iTunes, spinning colour wheel takes she's to laid anything.
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Feb 27, 2010
Recently got a week 8 x4 i7 27" iMac. When running Windows 7 x64, sometimes randomly the screen will fill with pink squares and just freeze and shutdown. It looks like a graphics problem but I could be wrong.
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Aug 26, 2014
My 2007 iMac keeps shutting off randomly. I'm running Mountain Lion. I have tried unplugging it from the back waiting and plugging it back in. Sometimes when I have turned it back on, the fan will run loudly.
2GHz Intel Core 2 Duo
4GB Ram
OS X 10.8.5
Info:
iMac, Mac OS X (10.5.1)
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Mar 23, 2010
I have a MacBook which has recently been shutting down when it feels like :/ this all started a week or two ago (well not the shut downs but other issues that I'll get too), basically the fan I think has been knocked as it is bumping the top or something as the whirring is getting loud and it sounds like every now and again it hits something
Also CPU usage seems to be averaging out at 20% for Safari and 100% for HD Video where as it used to be very small amount for Safari and 30 - 40% for HD.
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Jun 22, 2014
My 2011 macbook pro started shutting off with increasing frequency. It was very frustrating. I installed mavericks and now it seems to shut off about every 5 minutes! Only if I'm working, if it's streaming it seems fine. I think it would be impossible to actually get work done. I've read many others are having the same problem and taking theirs in for costly ineffective repairs.
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Apr 1, 2007
I have a iMac G5 (Pre-iSight). I just got home and my computer was off, I didn't turn it off and I asked my mom, she said she didn't come into my room. I was posting something on here and my computer shut off on its own. What gives?
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Feb 2, 2009
I have a refurbished iMac G5 that randomly just shuts off. It makes a little "zzzttt" sound, like something is short circuiting and then dies. Sometimes I can power it right back on and sometimes I have to unplug it and wait a few hours before it will come back on. While it's running, there are no issues. It functions beautifully. Anyone else had this type of problem or can you suggest a solution? Here's the info on it:
Mac OSX 10.4.1,
Machine Name:iMac G5
Machine Model:PowerMac8,1
CPU Type:PowerPC G5 (3.0)
Number Of CPUs:1
CPU Speed:1.8 GHz
L2 Cache (per CPU):512 KB
Memory:1 GB
Bus Speed:600 MHz
Boot ROM Version:5.2.2f4
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Dec 31, 2010
I don't know if it is a fan or a drive that starts up and runs really fast and loud, then the computer shuts off. I always thought it was the fan, but now am not sure. I have moved it to a place where it is exposed to more air, but that has not seemed to help. Does anyone have an idea or solution to this problem? The nearest Mac dealer is about 80 miles away, so if I can fix this on my own, I would like to try.
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Apr 4, 2012
I don't get any spinning wheel of death or anything it just freezes & won't do a thing but the mouse still moves?! I'm having to turn it off at the wall 3 or 4 times a day which I'm sure can't be good for it but I don't understand what's caused it to start, the only thing iv installed lately was adobe reader but it does seem to occur more when I'm using an Internet application (either safari or connecting for software updates). Iv just sat for over an hour on logic with all manner of plugins going off without any issue
Info:
MacBook Pro, Mac OS X (10.6.8)
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Oct 9, 2009
I've been having troubles with safari shutting down randomly. I went to [URL] to try and reinstall safari. But it won't let me do this because it says this update requires mac os x 10.5.8. or newer. The thing is I have 10.6.1. What should I do now?
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Mar 13, 2012
Late 2011 Macbook pro shutting down randomly, sometimes changing date.
Info:MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)
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Jun 12, 2012
It keeps shutting off randomly, its a little over a year old, it's pluged in, fully changed, and and time resets to 2000 and the wifi information get lost.
Info:
MacBook Pro (13-inch Mid 2010), Mac OS X (10.6.8)
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Dec 7, 2014
I've had it for about 6 years now and always have to have it plugged in because the battery is swollen and won't fit for the lid to stay shut. Now recently it's been randomly shutting off and have to turn it on again. Is it dying or it simply not getting enough sleep?
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Aug 3, 2009
I have a MAc Pro, Bought in January 09, pretty much stock except for an exta 500 gb drive and the Nvidia video card.
I have a strange problem, I will be using the computer and it will just shut down. Ie my LCD monitor shows the "RBG MODE" screen which it shows during a reboot or if turned on when computers off. My Intelli mouse explorer laser mouse turns off but if I click the laser turns on and off with each click and the power light on the tower is lit but nothing turns the machine off/on unless I hold it down till it reboots.
This has been happening since about the beginning of July, happened last week again every 10 minutes or so it would do this. Saw a post that said it's cause its too hot and its shutting down for safety, I have Istat and the temps at that time was 35 degrees celcius ambient and the processors when watching a dvd or somthing was around 40 degrees, I installed smc fan control and ramped up my fans and with them runing 1500 rpms the temperatures have been steady at around 32 ambient and 35-37 for the vaious sensors. Today the heat wave is over and istat says the ambient is 26, processors and drives are still 35-37 and it rebooted again.... is my machine running hot or is it somthing else.. I am at a loss. It is a Stat holiday here so I cant call my local repair place. Running OSX 10.5.7 any other info is available if needed.
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Feb 7, 2010
So, for the last week or so I'm been experiencing very strange symptoms, which I think are probably all connected:
1) My MBP (running 10.5.8 bought in August 2008) has from time to time just been turning itself off. Like, I'm just working on something and then it suddenly turns off.
2) My mouse from time to time stops responding to input, sometimes the keyboard does the same thing
3) When I restart after 1 or 2 occurs, it doesn't work. The computer turns on, I get to the screen with the apple on it (there's a chime all of that), then it goes to a plain blue screen and just stays there - the log in box never comes up.
4) In what I think may be related, my computer seems to be running extremely "hot" right now. After just normal use, I'm reaching GPU temperatures as high as 75 degrees according to iStat and CPU temps around 70.
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Jun 17, 2012
So frustrated with this situation. It appears this is only happening since upgrading to Lion so that's why I've chose to post it in this forum. My screen has been shutting off randomly. And I've only been able to get it to happen when I use gestures on the trackpad. (I.E.: "App Expose, "Show desktop" or "Show all windows.) I say my screen because the HD is still spinning, the keyboard backlights are still on and the status light is still lit. I can't do anything but hard shutdown. I've tried adjusting the brightness, clicking, keyboard commands (force quit) and nothing does anything. I've been sending the crash report to Apple but I feel like that is pointless so I'm turning to the forum for a possible answer. I've inluded my specs below as well as a copy of the log that got sent to apple (in blue). I don't know if it will say anything to anyone but it's worth a shot. I don't think it's a screen cable issue cause I'm not moving or adjusting the screen when this is happening.
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Jul 3, 2012
Macbook pro (older style non-unibody) running 10.6.8 has started randomly shutting down instantly for no reason. Sometimes only lasting 30 secs before just shutting off, sometimes up to 10 minutes. Happens when cool or hot, no apparent rhyme or reason. Tried resetting SMC, no difference. Ran software update, thought that had fixed it as it stopped happening for a day, then the problem started up again.
Info:
MacBook Pro, Mac OS X (10.6.3)
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May 2, 2006
Does anyone know what may be up with my Mac G5?? It just keeps on turning itself off without warning! It can happen at anytime... usually about 5 mins after I switch it on, although this has varied!
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Nov 28, 2010
I'm using iGetter version 2.8 and it's great. Downloads are quick, but I have one concern about the program. It randomly shuts down every 5-10 mins or so. The downloads aren't finished downloading and iGetter shuts down.
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Feb 11, 2010
My Macbook is 1.5 years old (13in, white, 2 GHz). About two weeks ago, it would randomly shut off. It would restart fine, but shut off sooner. Sometimes, it wouldn't even restart. Now, it's at the point where when I power it on, it rarely restarts past the white apple start-up screen.
My thought is that it is overheating. Are there any more ideas? What can I do to save my macbook?
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Feb 16, 2012
When my Macbook pro is not plugged in, and i try to watch videos, it shuts down like it dies, even if it says the battery is 90%. Is it a battery issue? Or some other type of issue? Bought it in late 2008..
Info:
MacBook Pro (15-inch Late 2008), Mac OS X (10.5.8)
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Apr 4, 2012
I had been using it for about an hour without any problems when this started happening. Ever since, I've been consistently having these issues. It is a mid 2010 model. It also sometimes flashes weird glitchy images instead of booting up or starts flashing them while I am using it, and then shuts down. Here's a quick video of what I'm talking about (it was showing even crazier images before I started recording it)[URL]
Info:
MacBook Pro (15-inch Mid 2010), Mac OS X (10.7.3)
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