IMac turns off spontaneously during start up

My iMac turns off during startup any suggestions as to why?

Try running Apple Hardware Test on your computer. Also repair the hard drive with disk utility.

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While doing the most recent firmware upgrade, my iMac hung on the spinning ball. The instructions said "not" to turn off power during the process, so I don't know what to do. The ball is still spinning.

While doing the most recent firmware upgrade, my new iMac hung on the spinning ball. The instructions said "not" to turn off power during the process, so I don't know what to do. The ball is still spinning.

If you tried resetting the ipod and it still keeps having the same issue you described, try setting the ipod to disk mode.
Here is an article from the apple support website on setting the ipod to disk mode.
http://docs.info.apple.com/article.html?artnum=93651
If you can get the ipod into disk mode, connect it to the computer and rrestore the ipod using itunes.
if the ipod will not go into disk mode, you can return the ipod or set the ipod up for service via the apple ipod service depot.
http://depot.info.apple.com/ipod

IMac turns off by it self and does not want to turns on later, do i have to feel the fan at the back?

1.- The imac turned off by it self.
2.- I tried to turned on pressing the turn on/off button and it did not do anything.
3.- I disconected the computer form the wall and wait for some minutes, and it did no do anything.
4.- After about 20 minutes i tried again and turned on by pessing the on and off button.
5.- The imac turned off again and disconected form the wall and conected to another electrical contact at the wall, adn it did not turned on. i wait for some minutes and turned on again, but after about five minutes it turned off again.
6.- I left the imac connected to the wall for a couple hours and i tried to turned onn by pessing the on/off button and it did not turned on.
7.- I left all night connected form the wall and tried to turn it on this morning and it did not turn on.
8.- This time, I only disconnected the imac cord form the back of the computer and left it for a couple of hours, then I concected and turned on
9.- All the times that the computer turned on it started like a restart and no announce or windows appear telling me about an error or something like that.
10.- One of the times I touched the computer at the back and felt it hot, not too hot, but I do not how normal is.
11.- I can feel some very, very little air at the back form the vent.
What do I hve to do?
What kind of tests can I do to know if the computer's an is working ok?

Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

How do I turn off the "bong" start up tone without turning off all other sounds?

How do I turn off the "bong" start up sound without turning off all other sounds?

The start up tone is an important part of the start up sequence however if you want turn it off there are utilties that will do that. You can use Google to find one.
BTW, if you look in your owners manual it says;
"If you‘ll be away from your iMac for less than a few days, put it to sleep. When youriMac is in sleep, its screen is dark. You can quickly wake your iMac and bypass thestartup process."
My recommendation, follow the manual and don't shut the computer down.

How can I turn off app auto start from last status? At OS X 10.8.3

How can I turn off app auto start from last status? At OS X 10.8.3

system preferences >general > close windows when quitting an application

MAC is turned off when you start the application.

MAC выключается при запуске приложений.
MAC is turned off when you start the application.
P.S. it is desirable to give an answer on the Russian
Interval Since Last Panic Report: 69711 sec
Panics Since Last Report:          1
Anonymous UUID:                    BF785864-5B2E-7638-B9E8-ED938B20D6F6
Thu May 23 20:28:41 2013
panic(cpu 2 caller 0xffffff80242b7e95): Kernel trap at 0x0000000000000000, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x00000000053ca068, CR4: 0x00000000001606e0
RAX: 0xffffff8024813e10, RBX: 0x0000000000000001, RCX: 0xffffff80248e04f0, RDX: 0xffffff8024890100
RSP: 0xffffff810cd7b978, RBP: 0xffffff810cd7b9a0, RSI: 0x0000000000000001, RDI: 0xffffff8045a66410
R8: 0x000000000000000e, R9: 0xffffff8045a90908, R10: 0xffffffffffffffff, R11: 0x00000000ffffffff
R12: 0xffffff803e98cc02, R13: 0x0000000000000000, R14: 0xffffff803e98cc10, R15: 0xffffff8045a66410
RFL: 0x0000000000010202, RIP: 0x0000000000000000, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000010, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff810cd7b610 : 0xffffff802421d626
0xffffff810cd7b680 : 0xffffff80242b7e95
0xffffff810cd7b850 : 0xffffff80242cd4dd
0xffffff810cd7b870 : 0x0
0xffffff810cd7b9a0 : 0xffffff80242772b2
0xffffff810cd7b9d0 : 0xffffff8024585aae
0xffffff810cd7b9e0 : 0xffffff80242f0981
0xffffff810cd7ba30 : 0xffffff80242f0021
0xffffff810cd7ba70 : 0xffffff80242f10d6
0xffffff810cd7baa0 : 0xffffff80242ed939
0xffffff810cd7bac0 : 0xffffff8024515c0a
0xffffff810cd7bb20 : 0xffffff802431112c
0xffffff810cd7bb90 : 0xffffff80242fc5f1
0xffffff810cd7bd90 : 0xffffff80242fc93d
0xffffff810cd7bf50 : 0xffffff80245e063a
0xffffff810cd7bfb0 : 0xffffff80242cdd23
BSD process name corresponding to current thread: installd
Mac OS version:
12D78
Kernel version:
Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST... [Show more]

A: MAC is turned off when you start the application.

I took in the store returned MAC. Although when you start offering configure everything from scratch. The OSes can reinstall?
Last night passed out on completion of the work.
Interval Since Last Panic Report: 75071 sec
Panics Since Last Report:          2
Anonymous UUID:                    BF785864-5B2E-7638-B9E8-ED938B20D6F6
Thu May 23 23:25:35 2013
panic(cpu 2 caller 0xffffff80036b7e95): Kernel trap at 0xffffff80036102b1, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000040001, CR3: 0x0000000079b9d056, CR4: 0x00000000001606e0
RAX: 0x0000000000040001, RBX: 0x000000000000002c, RCX: 0x7fffffffffffffff, RDX: 0xffffff80f546bd88
RSP: 0xffffff80f546bd30, RBP: 0xffffff80f546bd70, RSI: 0x000000000000002c, RDI: 0xffffff80f546bdb0
R8: 0x000000000000001f, R9: 0x00000000000003ff, R10: 0xffffffffffffffff, R11: 0x00000000ffffffff
R12: 0xffffff802a9a6a20, R13: 0x0000000000000001, R14: 0x0000000000000070, R15: 0x0000000000040000
RFL: 0x0000000000010216, RIP: 0xffffff80036102b1, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000040001, Error code: 0x0000000000000000, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff80f546b9d0 : 0xffffff800361d626
0xffffff80f546ba40 : 0xffffff80036b7e95
0xffffff80f546bc10 : 0xffffff80036cd4dd
0xffffff80f546bc30 : 0xffffff80036102b1
0xffffff80f546bd70 : 0xffffff8003620dc4
0xffffff80f546bda0 : 0xffffff800364f0c1
0xffffff80f546bde0 : 0xffffff8003616786
0xffffff80f546be50 : 0xffffff800361831c
0xffffff80f546be90 : 0xffffff8003635a40
0xffffff80f546bed0 : 0xffffff80039556a7
0xffffff80f546bf40 : 0xffffff8003955449
0xffffff80f546bf50 : 0xffffff80039e063a
0xffffff80f546bfb0 : 0xffffff80036cdd23
BSD process name corresponding to current thread: ubd
Mac OS version:
12D78
Kernel version:
Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64
Kernel UUID: 3EB7D8A7-C2D3-32EC-80F4-AB37D61492C6
Kernel slide:   �... [Show more]
Read other 15 answers

When I click sleep, Imac turns off not just sleep

When I click sleep, Imac turns off not just sleep. Any fix?

Hi Hank,
Some things to try...
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/ht1379
In fact, do 3 in a row, takes a bit of time.
Intel-based Macs: Resetting the System Management Controller (SMC)...
http://support.apple.com/kb/HT3964
(SMC reset= Shut down, disconnect power cord for 10 seconds, reconnect power cord, wait 5 more seconds, turn computer back on)
but it is slightly different: (PMU REST = Shut computer down, disconnect power cord for 10+ seconds, reconnect power cord WHILE SIMULTANEOOUSLY PRESSING POWER BUTTON, let off power button for a few seconds, then press power button again to restart the mac mini.)
Can also be caused by USB or Firewire devices.

IMac turns off while sleeping

My iMac sometimes turns off during sleep mode, I did call apple care and went through utilities and the tech support said that issue should be resolved, but it happen again today. Has anyone else had the same issues? Is this also the start of some bigger issues down the line?
Thanks,
BC

HI BC,
Check System Preferences/Energy Saver. Click the Schedule button bottom right in that pane and make sure it's not set to turn off at a certain time.
According to this article, http://support.apple.com/kb/HT1237 Make sure your software is up to date.
Carolyn

IMac turns itself on during the day

I don't know what is going on. All of a sudden my iMac turns itself on in the middle of the day. It is off when I leave for work (not asleep) and on when I come home. It only seems to happen during the weekday.
I have EyeTV on my computer which can turn it on before recording a program, but I don't record anything during the day.
Is there a log file I can look at to see if I can figure out what is causing it to turn on?
Thanks!

When you go there hit the "Schedule..." button and see if it selected if you havent already done that and then id see if your permissions are messed up its unlikely but if the powermanagment systems perrmisions get messed up it can cause things like that to happen

Computer freezes at Apple screen, dial stops turning after accidentally turning off computer during Migration?

Accidentally turned off my Powermac G5 in the middle of a migration from my iMac G4 and now will turn on, but stops at apple screen, dial stops moving. HELP!

Hello,
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If the above fails, then it appears to be time for a relatively painless Archive & Install, which gives you a new/old OS, but can preserve all your files, pics, music, settings, etc., as long as you have plenty of free disk space and no Disk corruption, and is relatively quick & painless...
http://docs.info.apple.com/article.html?artnum=107120
Just be sure to select Preserve Users & Settings.

My Satellite A300 turns off spontaneously

Hello,
Somtimes my laptop (Toshiba Satellite A300) sunddenly spontaneously turned off. Very often it happend during system startup. Everything it happend when my laptop work only on power supply. When my laptop work only on battery (without power supply) everything is ok.
1) Does it mean that i should change the power supply?
2) I use surge protector but my power socket is without graunded. Is it possible that power socket without graunded broke the power supply?
3) Should i use power socket only with graunded?
I live in Poland if there is any help.
I will be gratefull for answers.

Hi Reda,
from my point of few it’s difficult to say what could cause this annoying issue.
But I think you should check the notebook functionality using another good working AC adaptor.
It’s not impossible that a faulty AC adaptor would cause the problems.
At the other hand the issue might be caused due to power supply electronic issues.
Power supply electronic is part of the motherboard and such issue would be the worst case.
Additionally you can check whether different power plant would be selected after connecting the AC adaptor. In such case switch it to the power plan which is selected using the battery power.

IMac turn off by itself

Hi everybody
My iMac has been turning off repeateadly in the middle of a job. When it does it, I cannot turn it on again inmediately. I have to wait to next day, some times even longer. If the cable is plugged in, I cannot turned it on. I've tried everything. Changing the cable, changing the power font, etc. Some people say the problem is with the mother board. As a consequence of this, my disk drive didn't work anymore.
I have been told this is a factory problem and that Apple is recognizing it. Does anyone know abot it?
Thank in advance

T update; I get the blackout without the restarts and tried all the suggested remedies on these forums with no relief. I can see light from the grill covering the ram access port so I do not think it is fully shutdown but will not respond to any wireless input devices so I must press the power bottom on the back to restart It which it does in a normal fashion. The machine does not seem to be running hot (much cooler than my black Mackbook) . I guess I will be bringing it in but I do not feel optimistic given the posts by users who did so and did not get a fix. I think this issue will take some time to resolve. I just wanted to add my two cents.
See Berry's list of similar posts as follows:
27-inch / 27" iMac Random Shut down:
http://discussions.apple.com/thread.jspa?messageID=11791328#11791328
Random Restarts on Intel based iMac
http://discussions.apple.com/thread.jspa?threadID=1943134&start=0&tstart=0
Sudden restarts and shutdowns on iMac
http://discussions.apple.com/thread.jspa?threadID=1865839&start=0&tstart=0
And this current one here: 27" Core i7 iMac blacks out then restarts itself for no reason:
http://discussions.apple.com/thread.jspa?threadID=2258132&start=0&tstart=0

Can I turn off notifications during a phone call so I don't hear text messages come through

Can u turn off notifications so I don't hear text messages come through when on the phone

Like the vibrate button then you hear it keep buzzing does this not bother anyone else it kills me when my business sends group messages I can get 14 or 15 during a phone call when people start replying to each other thanks

Why does my iMac turn off unexpectedly?

I have had my iMac for over two years and never had this problem. It has just started about two weeks ago. About 30 minutes or so, maybe shorter or longer, after I turn it on, this gray bar goes over the screen and then a message appears. It says to please turn off or restart the computer. What can I do to stop this. I've heard that it might be an overheating problem, but I'm not sure.

Hello Fredrick. Welcome to Apple Discussions.
If the screen is in multiple languages as per the following link, then you are experiencing a kernel panic.
What is a Kernel panic?
It is difficult to pin down but is often a hardware related matter. Sometime failing RAM can lead to this problem as well.
Consider the exploration of this topic in the following link.
Resolving Kernel Panic's by Dr Smoke

Imac turning off and won't turn back on

hey, here is the details for my imac
Model Name: iMac
Model Identifier: iMac4,1
Processor Name: Intel Core Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per processor): 2 MB
Memory: 1 GB
Bus Speed: 667 MHz
Boot ROM Version: IM41.0055.B08
SMC Version: 1.1f5
Serial Number:
I will be randomly using my Imac and it will just shutdown. Then if i try to turn it back on i won't be able to, so i have to take out all the power chords from the wall, leave it or 30 mins or so then try and turn it on then it usually will. When i plugg the power back in i do not need to turn the imac back on, I just relugg it into the wall and the computer will start up. This used to happen a few hours into using my mac but now it will hardly turn on before it just shuts down. Also, if i leave it plugged into the wall after it turns off it will not turn back on, i need to unplugg it for it to work again.
Please someone let me know what is going on!
thanks!
Message was edited by: Moderator

Hello Nicholas,
Try resetting the System Management Controller. http://support.apple.com/kb/HT1543
Summary
The System Management Controller (SMC) is a chip on the logic board that controls all power functions for your computer. If your computer is experiencing any power issue, resetting the SMC may resolve it. The SMC controls several functions, including:
*Telling the computer when to turn on, turn off, sleep, wake, idle, and so forth.*
Handling system resets from various commands.
Controlling the fans.
Carolyn

IMac turns off spontaneously during start up

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