IMac G5 shuts down while installing software

My G5 iMac 3yrs old Os 10.4.11? while installing iLife'08 comp shut down. Restarted, tried install again,shut down. Progress bar shows 28% complete at shut down. Same problem with iWork '08. Three times in succession.Any ideas?.............Rich

Try booting from your install disc, run verify/repair drive from Disk Utility and see what it says. Then, reboot and repair permissions while booted from your hard drive.
Let us know how you make out,

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My imac suddenly shuts down while on line.

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? Any other sugestions?

Which iMac..? Go to > How to identify iMac models
1. Reset the SMC > Intel-based Macs: Resetting the System Management Controller (SMC)
2. Reset the PRAM and NVRAM > Resetting your Mac's PRAM and NVRAM
Then test it for a time and report back.
You also might want to give the Extended Apple Hardware Test a run, as per > Intel-based Macs: Using Apple Hardware Test to see if it turns up a hardware problem.

IMac G5 Shuts down while running applications

I installed iLife '06.
Since then my iMac G5 (20") has started shutting down while I'm working.
I'm not sure if the installation is related to the intermittent shut down or if there is another problem.
Someone told me that the fan might be bad. I don't know how to check if the fan is bad. I've heard that some iMac's have noisy fans. I've never heard the fans on my iMac.
I've had my iMac for ten months with no problems.
iMac G5 Mac OS X (10.4.6)

There are two common reasons for an iMac G5 to shut-down:
1) a failing power supply (see the article A. Brody mentioned).
2) Over-heating.
I'll tackle the second one.
All the recent Macs have a protection mechanism built-in. If the system gets beyond a given temperature, the computer will turn itself off (without warning) to prevent permanent damage.
So, if you notice that the computer is running warm before it shuts-off, then that could be the cause.
But, it is also very likely to be the power supply.
And, operating with a faulty power supply could lead to tons of other problems or damage.
So, I would personally get it into a shop for inspection and repair very fast.
But, if it is under warranty, you should not have any trouble at all getting it fixed (either standard warranty or AppleCare).
If it's warranty has expired, see if it is within the covered systems listed in the article A. Brody gave you.
If so, request it to be inspected and repaired for free under terms of that extension.
Regardless of which problem it is, get it fixed. Neither problem is one that should be ignored.
Hope this helps.

IMac keep shutting down after installing OSX lion

Hi,
I have a mid 2010 27 inch i5 machine and after I had installed OSX Lion last month the machine randomly shut itself down while I'm using it. At first I thought it was because of a software problem with Final Cut Pro X, since I installed that at the same time and it would shut down while I was using it. Then it start to shut down while I'm just browsing the net. Restarting is not a problem but a pain to loose unsafe data when it crashes.
Does anybody else have this problem? Again the machine was working fine before OSX Lion so I don't think it's a hardware issue. On average it would shutdown once or twice per usage day sometime a few minutes after turning on the machine, still cool, and sometime after a while, not excessively hot.
Appreciate any help and thank you in advance!

Hi,
I have a mid 2010 27 inch i5 machine and after I had installed OSX Lion last month the machine randomly shut itself down while I'm using it. At first I thought it was because of a software problem with Final Cut Pro X, since I installed that at the same time and it would shut down while I was using it. Then it start to shut down while I'm just browsing the net. Restarting is not a problem but a pain to loose unsafe data when it crashes.
Does anybody else have this problem? Again the machine was working fine before OSX Lion so I don't think it's a hardware issue. On average it would shutdown once or twice per usage day sometime a few minutes after turning on the machine, still cool, and sometime after a while, not excessively hot.
Appreciate any help and thank you in advance!

IMac keeps shutting down while in sleep

I have an iMac G-5 without iSight.......not sure if this started happening after the last sucurity update or installing HP printer software, but now when the computer goes into sleep, it waits awhile and then shuts down entirely, forcing me to turn the computer back on. I uninstalled the HP software, and repaired permissions, but this still keeps happening. Any ideas on what caused this and what I can do to fix it?
iMac G-5 Mac OS X (10.3.9) 80 gig hardrive which has about 2 gigs left

Hi,
I am having a similar problem. I have an iMAC (serial in the range W8435xxxxxx - W8522xxxxxx) and in the two weeks, when the computer is put to sleep it turns off. However, I only notice this in the morning after it has been asleep all night. The problem seems to be far more frequent when I put it to sleep as opposed to just letting it time out and go to sleep that way.
I have applied all updates and the only modification to the computer is extra ram (from Other World Computing).
I have seen elsewhere that I can see the computer's reason for shutdown in "system.log". Can anyone tell me how to find that so I can look for the shutdown code there?
Any ideas?

IMac G5 shuts down while importing HDV video in iMovie

So here is the problem, my 20" iMac G5 will be importing video from my Sony HDV camera, and will just shut down. I mean turn off completely. It happened 6 times yesterday to my wife. When I try to turn it back on, sometimes it will work, sometimes, I have to unplug the iMac from the plug and wait 30seconds before it will turn on again. Any one have any experience with this? Is it a power supply issue? Any thoughts would be greatly appreciated

got apple care to replace power supply

IMac completely shuts down while working in LR4

I have an iMac 27 2.9ghz 12gigs ram with a large file of photos (13000+) My computer shuts completely down witha sudden "pop" when working in LR4 only. Had iMac checked at genuis desk an they put a new powersupply in....but still does the same thing...Is it the program LR4.2 or my computer?

n.vonstaden wrote:
My computer shuts completely down witha sudden "pop" when working in LR4 only.
Sorry, this is clearly a hardware issue...LR 4 does (as Victoria mentions) "stress" the CPU. But f you are hearing a "pop" then something is seriously wrong with your hardware (a "pop" indicates that your power supply is toast) your hardware should NOT be making noises...when it does, you really need to look out!

Imac randomly shuts down while idle

I have a new imac 27". Purchased early Sept. about three times in that space I have come to use it finding it shut off. I leave it on sleep all the time.
Could I need a new UPS.? It is about three years old.
The console report shows it is looking for something but I don't think that has any bearing on the problem. Once it is up and running, no problems.
This is the console message:
"11/6/10 12:49:23 PM ..ButtonManager(164) Looking for devices matching vendor ID=1193 and product IDj=8717"

Thanks. I just realized that something else seems to be going on here. I have two printers attached to the computer, an HP 6150 all in one and an Epson R1900. I just noticed that the HP was also off. It is not plugged into the UPS but a different strip. I unplugged it and plugged back in and it came back on. Is it possible that somehow the printer is sending some kind of signal to the computer and shutting it down??? Sounds weird but maybe there is a problem with the printer. Maybe I will unhook the printer from the computer and see if that helps. It is so random and happens so seldom that it will be hard to know.
Thanks
Judy

Laptop shuts down while installing/updating

I've been having this problem for a while now and i have no idea how to fix it. My laptop seems to just shutdown when installing or updating programs. At first i thought the problem was that the laptop was overheating from playing games on my windows partition, however that doesn't seem to be the problem. Any advice on what is causing the problem or what i can do to fix it?

Shutdown issues IMHO are usually related to : 1) overheating, 2) power supply faults, 3) CPU or motherboard faults. They rarely are related to RAM or hard drive errors as those tend to show up as lock-ups (rather than shutdowns). Given you have a laptop with what I assume is a decent battery and connected to your power supply I don't think you have a power supply fault - but that is possible.
Try stressing your system in Windows with a CPU stress program and see if you get shutdowns, then you know for sure you have a hardware fault. You might want to burn a copy of Ultimate Boot CD and double check your RAM, hard drive for errors but I don't think they are your problem.

MacBook shuts down while installing snow leopard

Had to replace hard drive and am trying to install snow leopard. Seems to do fine for about 10 minutes and then turns itself off. Any ideas or thoughts would be appreciated.

Hi Bobsythe,
You could try using the Apple Hardware Test to make sure all the hardware is working as it should:
Intel-based Macs: Using Apple Hardware Test
http://support.apple.com/kb/ht1509
Cheers!
- Ari

Since installing OSX 10 my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

Since installing OSX 10, my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

1. This is a comment on what you should and should not do to protect yourself from malicious software ("malware") that circulates on the Internet. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
If you find this comment too long or too technical, read only sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
For the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandboxing security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you always stay within a safe harbor of computing practices. How do you know what is safe?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is unsafe.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are outside the safe harbor, though not all are necessarily harmful.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe. For instance, if a web page warns you that Flash is out of date, do not follow an offered link to an update. Go to the Adobe website to download it, if you need it at all.
Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
"FREE WI-FI !!!" networks in public places are unsafe unless you can verify that the network is not a trap (which you probably can't.) Even then, do not download any software or transmit any private information while connected to such a network, regardless of where it seems to come from or go to.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use one of the free anti-virus products in the Mac App Store — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. Most of the real danger comes from highly targeted "zero-day" attacks that are not yet recognized.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. An anti-malware product from the App Store, such as "ClamXav," doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An anti-virus app is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
Anti-virus software may be able to tell you which particular trojan it is, but do you care? In practice, there's seldom a reason to use the software unless an institutional policy requires it.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither should you assume that you will always be safe from exploitation, no matter what you do. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

I have an iMac that I purchased back in 2010 and over the past 9 month or less my computer just started shutting down while someone was in the process or working on it. What could this come from? Is there a simple solutions to this problem?

I have an iMac that I purchased back in 2010 and over the past 9 month or less my computer just started shutting down while someone was in the process or working on it. What could this come from? Is there a simple solutions to this problem?

Which model iMac do you have? http://support.apple.com/kb/HT1758 How to identify iMac models
Which OS is currently installed?
Check out KB Articles: http://support.apple.com/kb/HT3964 Intel-based Macs: Resetting the System Management Controller (SMC) and http://support.apple.com/kb/HT1379 Resetting your Mac's PRAM and NVRAM
If not of the above works and you have AC, call them. Let them deal w/it. Otherwise, take your iMac down to your local AS or an AASP. Diagnostic testing is FREE!
You can also research for a solution on YouTube's "How To" website and iFixit.

New iMac shuts down while downloading mountain lion update

New iMac shuts down while updating Mountain lion

Hi, any sleep settings set up, like put Disks to sleep?
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.

Since I installed Mountain Lion, my iMac has shut down after 15-20 minutes. I have adjusted screen saver, shut down time, and sleep after. Nothing seems to help, any ideas?

Since I installed Mountain Lion, my iMac has shut down after 15-20 minutes. I have adjusted screen saver, shut down time, and sleep after. Nothing seems to help, any ideas?

As old as your iMac is, have you cleaned out the dust? Dust buildup can lead to over heating issues. Remove any and all things plugged into it including the power cord, Remove the RAM access grille. Vacuum all openings starting with the RAM access area (air intake). Vacuum all ports and plugs, DVD slot and the opening across the top of the rear of the body. Blow compressed air through all your openings and vacuum again to remove any dust you loosend. Reinstall the RAM grille. Plug in the keyboard and mouse if not blue tooth. Insert power cord...
You are now in a perfect position to do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
Here is a link to a Widget to monitor your temps and other operations:
http://islayer.com/apps/istatpro/

IMac G5 shuts down unexpectedly

Hi friends at Apple Discussions,
This week my iMac has shut down by itself unexpectedly about once a day. Immediately after it shuts down it will not start up, although after a 10 minute wait or so, it will start up and run just fine. Nothing had been changed, hardware or software, recently that should have caused this.
It is a Rev A machine. Serial number is QP507XXXX. Within the first 6 months of ownership, she had a power supply failure that was repaired under warranty by an Apple Retailer. Everything has been great since then.
I understand that this might be another Rev A hardware failure issue and I believe I am still inside the three year repair window. However, I also understand that there are often preliminary steps to take before jumping to that conclusion.
Any advice as to what action should be taken next? I appreciate your expertise.
James
iMac G5 1.8 GHz 20" Rev A 768 MB RAM (Crucial). Mac OS X (10.3.9) iBook G4 12"

Status report...
In previous posts I did not mention that I am not under AppleCare. The tech was willing to help but suggested that I might try isolating/replicating the problem on my own. Otherwise, if I take it in and they find it is a software issue, not the hardware issue, I get charged.
His suggestion: Try an archive and install for a couple of days, see if problem still occurs. That will determine if it is a hardware or software problem. Actually, I believe I'll do a clean install instead for a couple of days, as my entire hard drive is cloned & bootable on my external LaCie drive. This is an inconvenience and steals my time, but its easy enough to do, I guess.
So I'll do it, but the question lingering in the back of my mind is...is this actually necessary? Does software shut a machine down randomly and prevent it from booting up again for the duration of some unknown 'cooldown' period? Besides, the only software change I have made relativly recently was installing Camino I am highly skeptical that its a software issue. But because I am not an expert, I will follow the suggestions.
Any comments on this?
James

IMac G5 shuts down while installing software

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