Why won't my mid 07 iMac shut down?

My 07 keeps hanging up, won't restart or shut down without holding the power button down.
I upgraded the ram, thought this would help, same outcome.
Any ideas?

Try turning off the anti-virus software to see if it makes a difference.
Generally speaking Macs only need anti-virus if you run Windows on it, or if you share files with Windows users.

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Why won't my Mac Book Pro shut down?

My Mac Book pro isn't shuttting down. I've clicked the apple icon on the left > shutdown. But nothing happens it just shows this rainbow wheel for a few seconds. I can't also control my volume and screen brightness with my keys any more and system preferences is not responding.. Help! Please!
Thank you!

Alright.., I will try this and hope i´ll do it right. My (a little older ) MacBook Pro has the same problem, it just wont shut down. Things works kind of fine until I shall shut it down, cause then the wheel will spin and spin and spin (and it goes to sleep still spinning), so it must be some corrupted files or app that is stuck. I just bought MacOs10.6.3 to reinstall or recover the harddrive, but I´ve never done these things on a Mac before. I have formated in Windows alright, but I am worried about the drivers, I dont know how to back them up! ??? Where do I find them? I hope I dont have to wipe the disc out fully, that it helps with just some cleaning up. I will come back after my "operation".. please wish me good luck! I really dont want it to crash completely.. Thank you for all the information I had here. See you soon.. '
/ Maria

Why doesn't my new (refurbished) iMac shut down?

All my years using Windows there was a little voice in the back of my head saying "if only you'd switch to Apple you wouldn't have to deal with all these weird things that don't quite work". Now I find that (at least my particular) Apple products show signs of being almost as unpredictable and unstable as Windows. Am I doing it wrong?

Glad you got it sorted. AppleCare doesn't appear to be open 7 days week world wide but I'm glad you were able to get through.
Because you're new to OS X I'd strongly recommend book marking the following sites:
Mac 101
Switch 101
Find Out How Video tutorials
List of Useful URLs for switchers
After you have started using OS X for awhile you will see how much more stable it is than MS Windows. No need to worry about viruses, do complete system reinstalls for minor issues etc. Whenever you switch from one system to another there is always a learning curve and comparisons and also breaking old (and sometimes bad) habits.
Welcome to the light side, I hope you get many years of enjoyment.

IMac shut down suddenly and won't boot back up

This morning my iMac shut down suddenly. All I had open was Google Chrome and I was just on Facebook and that's it. When I tried to boot it back up, it wouldn't load past the startup sound, wherein it would appear to shut back down,or at the very least the screen would go black (my mouse has lights that stay on when the computer is on, and the light kept going on and off while the screen remained black). This was the case for at least a half hour until it suddenly booted itself back up all on its own. I had it on throughout the day, just browsing the internet and watching Youtube. It shut itself down twice during the day, and both times it restarted on its own right away after showing me a grey screen with the Apple logo and a progress bar. Now it just shut itself down again and it won't make it past the progress bar screen - if it even makes it that far, sometimes it shuts off right after it makes the startup sound. It keeps trying to boot up on its own over and over again, but it keeps shutting down right away. All the fixes I've searched for so far require a computer that actually boots up all the way so I don't think I could run any reports if I tried!
I'm running the latest version of Yosemite (10.10.2?).
Model number A1311
Not entirely sure what specs are useful to know so I'm just gonna write some of what's on the box it came in:
3.2 GHz Intel i3 processor, 4MBshared level 3 cache
4GB of 1333MHz DDR SDRAM
1TB serial ATA hard drive
ATI Radeon HD 5670 graphics processor with 512 MB of GDDR3 memory
Bought it around fall of 2010. Not sure if it's worth trying to get it fixed (I live nowhere near an Apple store) or if I should just get a new computer, but I would like to know what's wrong, if possible.

Try to boot into the Recover Partition by holding down the Command + R keys on startup. If it still won't boot then the HD has probably crashed. The is likely a AASP in your area, you can locate one by clicking AASP Locator, take it to one to be professional diagnosed. If it's only the HD, assuming you have been backing up, restoring to a new HD is pretty simple.

Why does my iMac shut down unexpectantly?

Why does my iMac shut down unexpectantly?

Check System Preferences > Energy Sacer > Schedule
And try disconnecting all periphals except for the keyboard and mouse.

Why does my IMac shut down five minutes after start up?

I have a 21" Imac, purchased 2010. If I don't login to a user account within five minutes of start up the IMac shuts down. It used to go to a sleep mode.
My OS is Mavericks, 10.9.3. I also have the latest security update. A message comes on the start screen within one minute. It reads, if you are having trouble entering your password press the start button to shut down, then press again to enter a recovery OS. If I login within 5 minutes of start all is well.
Thanks, Gary

I have a 21" Imac, purchased 2010. If I don't login to a user account within five minutes of start up the IMac shuts down. It used to go to a sleep mode.
My OS is Mavericks, 10.9.3. I also have the latest security update. A message comes on the start screen within one minute. It reads, if you are having trouble entering your password press the start button to shut down, then press again to enter a recovery OS. If I login within 5 minutes of start all is well.
Thanks, Gary

IMac shutting down on startup - Can't enter safe mode as wireless keyboard doesn't connect quickly enough

Hi all,
I was planning to use bootcamp to install Windows 7 on my mid-2010 21.5" iMac.
Bootcamp recommended I usk disk utility to repair the drive. I had a snow leopard install disk in the drive, (I didn't realise Lion already had it's recovery tools built in to the hard drive.)
Disk utility said it can't repair the drive and recommended I start backing up my data (because the hard drive could be about to fail). Fine, so I restarted, with the intention of backing up everything (all my work for the last 12 months). So I press the power button, grey screen comes up, then the apple logo, then a progress bar appears (found this odd at first, but later found out it has something to do with disk utility and a bad hard drive) it gets to around 20% and then all power is cut from the iMac and the hard drive stops/everything powers down.
Now, I can't seem to get my iMac to boot into recovery utilities or into safe mode because it doesn't connect to the wireless keyboard in time before it shuts down. So, if I use a wired keyboard (I have a dell USB keyboard that I can take from the office), will I be able to boot into safe mode?
Also, if the disk in drive is causing the problem, then I can't remove it because the wireless keyboard won't connect/register any keypresses.

Ok so, status report:
Wired keyboard is non responsive when I plug it in before/during boot. So i guess it needs to be plugged in before the iMac shut down. That's that out the window.
Plugged in headphones and I can't hear the startup chime so don't know when to start holding buttons.
To make matters worse, the wireless keyboard is no longer paired with the iMac, getting a green blinking light which indicates it wants to connect to a computer or device.
So I can't enter any commands whatsoever, can't remove the disk in the drive or boot safe mode. It's my worst nightmare.

First Gen G5 iMac: Shuts Down In Just Seconds

My first generation G5 iMac shuts down within about 30 seconds to several minutes upon boot up. I had it off for about 3 or 4 days days while away, prior to this it worked fine. I purchased it in November of 2004.
OS 10.4.8
I have it connected to an APC UPS, there was a lengthy power failure while I was away, but the iMac was off; it is connected to the UPS via USB cable, i've disconnected all unnecessary connections, opened up the iMac and blew dust out of it, but it still shuts down shortly after boot up.
Any suggestions would be appreciated.
Thanks!
1.8 GHZ 20 G5 iMac (Rev A) 1GB RAM/250GB HD Mac OS X (10.4.6)

Thanks all, and to Barry & MGW:
It looks as if my iMac is within the serial no. range of a recall for power supplies. My wife is taking the iMac to an Apple store today, she called Apple earlier this morning and got an appointment, also we have the AppleCare plan and are still covered. I will post again after the Apple Store visit with an update.
I use SuperDuper! It's a great program, unfortunately my last back-up is several weeks old (shame on me) and now the iMac won't stay on long enough to make a fresh backup.
Hopefully, a new power supply will fix things up and the HD will be untouched.

Won't go to sleep or shut down

My iMac won't go to sleep or shut down when I tell it to. If I push the button on the back to make it go to sleep it doesn't do anything and if I select sleep from the apple menu it doesn't go to sleep. If I click shut down in the Apple menu it goes to a blue sreen and then the little loading symbol comes up and it just loads. I left it for an hour and it was still loading so I just held down the back button and turned it off that way. What can I do to resolve this?

First, try eliminating some variables-
Disconnect any devices attached via firewire or USB, and try again.
Some USB devices have been known to prevent the iMac from going to sleep or shutting down.

Imac shuts down when not in use

I purchased my 21.5" imac July 9, 2011 with Snow Leopard. No problems for 1 month. Then about August 12th or so, my imac started to mysteriously "shut down" when not in use. I'll be working on it, then get up to go pour myself a cup of coffee or something...then I come back to my computer that has now shut off. It is NOT asleep...it is OFF. So I turn it back on and it is fine. This has happened a few times now within a week. Anyone else have this problem?
By the way, I am now running Lyon, as of August 18th. When the imac shut down, I was usually viewing photos or on the web.
thanks!

First thing I would try is to reset the SMC, it can help with power related problems. Shut down the Mac and unplug everything including the power. Press and hold down the power button for 10 seconds. Plug in the computer but be careful not to press the power button as you are plugging it in. Wait a few seconds and turn it on. Hopefully it won't happen again. There is always Apple Support. Don't let the problem persist until your free phone tech support has expired (3 months). I would also recommend using the iMac with an UPS, and at the very least, a high quality surge protector.
If you have MS Word or a similar word processor you could try enabling the autosave feature and set it to 1 minute intervals. Keep a document open and if you come back to the computer and it has shut down, you can look at the last time the document was updated and know what time the comptuer turned itself off. It could be useful in diagnosing the problem.

IMac shuts down periodically

Imac shuts down occasionally when there is no power outage. Was trying to figure out why this happens.
Any suggestions? Are there specific logs that might help?
Thanks for the help

Check the Energy Saver preference pane for scheduled shutdowns. If there are none, see below.
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CSeq 'n Cause: -' | tail | awk '/:/{$4=""; print}' | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
Wait for a new line ending in a dollar sign ($) to appear below what you entered.
The output of the command will be automatically copied to the Clipboard. If the command produced no output, the Clipboard will be empty. Paste into a reply to this message.
The Terminal window doesn't show the output. Please don't copy anything from there.

Which 3rd party ram can I buy to max out my imac 2.93ghz i7 without the imac shutting down?

Which 3rd party ram can I buy to max out my imac 2.93ghz i7 without the imac shutting down? I know and apple knows that there is an issue with this but, I'm wondering if there is anyone here that has solved this issue. Apple wants waaaaay too much for 16 gigs of memory.

There was an issue with mid/late 2010 iMacs mostly, as evidenced in one of the threads:
https://discussions.apple.com/thread/2588800
However, I'm not aware of any current or remaining problems. I have a mid 2010 iMac and solved the problem by sticking with a total of 12 GB RAM (4 GB OEM original and 2 x 4 GB added from OWC). So, if you're not sure, contact OWC - they were actively working on the problem last year and if you buy 16 GB from them and they don't work, you can easily return it. Or, be super safe, and stick with a total of 12 GB - I'm finding that 12 is really quite enough even though I do a fair amount of photo, graphics, and video editing.

IMac shuts down when using Safari 2.0.4

My iMac shuts down when I visit certain websites such as Pogo or video sites. Took it to the Apple store and of course the problem wouldn't replicate there. They kept it to check out the scripts and logs to see if they could find a problem - without success; although they did suggest my house is haunted. Brought it home and it quit again.
We thought perhaps we were getting interference from other wireless devices and unplugged our cordless phone which worked for a day. The computer always turns back on so its more of an annoyance than a real problem, but I'm baffled.
It also happened once when I was downloading from the iTunes store, but is most prevalent with Safari.
We have wireless internet connected via ethernet to an Airport Express.
Any ideas? Thanks.
iMac G5 Mac OS X (10.4.10)

Hi Barry -
Yes I do live near a ghost town (kinda) - Virginia City, NV. And I did tell any unwanted visitors to leave.
Actually, in the last year, they have replaced the Super drive, power supply, inverter and logic board. The only reason I'm not thinking power issues is that it only happens when I'm in Safari or iTunes. I would use Firefox except I've got java issues with that. I can (and do) use the machine for other things all day long without problems. I can use Safari all day long as long as I'm not playing on Pogo or certain video sites. Maybe Pogo is haunted?
It also doesn't happen on my husband's iMac on the other side of the house. Is there something that could cause enough interference to actually make the machine shut down? Oh, the antennae for the satellite TV and internet are on the roof directly above me, if that would have anything to do with it.
Thanks for your help.

IMac shuts down after removing Mini DisplayPort to SVGA

Hi,
The last couple of years I have worked with a 27 inch iMac in combination with a HP 27 inch monitor. This monitor is connected via a Mini Displayport to SVGA connector. Because I am going to use this external monitor anymore, I disconnected it today which made my iMac shut down imediately. Then it keeps rebooting and trying to start up but shuts down again. Over and over.
The problem stops as soon as I connect the monitor again.
Anybody have any thoughts?

Hello there, TheCapGuy.
The following Knowledge Base article is a great resource for steps in troubleshooting spontaneous restarts:
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem."
http://support.apple.com/kb/TS4636
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

10.9.5 my iMac shuts down when supposedly asleep

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Why won't my mid 07 iMac shut down?

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