IMac :: Keeps Turning Off When In Use
Dec 12, 2009
My 20inch Imac which is running Snow Leopard and has been running fine for a long time now. It has just started to turn it self off then re start up on its own about 1 or 2 minutes later and then some times I just can't get it to turn back on again. I think it could be the psu?
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Jul 21, 2009
I have an iMac G3 which I am VNC'ing in. Its never going to be turned off, and I am never going to look at the screen, so how do I turn it off? I Want to save the CRT, and its not needed. I Know there's a way to actually turn off my MBP's Screen.
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Jun 5, 2010
2010 is a big year for me with my iphone 3g contract to expire in july, which means i can finally grab a slice of the fourth Gen Iphone, and my first bite into a Imac computer. Being a long time PC vista user 3 unfortunate years I'am tired of the windows world, yesterday I went to JB HI FI and i got quoted for $3,450.00 AU for an IMAC 27 Inch model which is orginally $3,626.00 AU.
with i7 2.8ghz processor
8gigs of ram
extended warranty and ms office
I'am holding off till tuesday to wait for WWDC to see if there is any news on Imacs. If there isn't I assume that it will be a quiet update, should i wait for the quiet update or buy one after the conference blows over.
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Jul 2, 2012
The noise starts immediately after hitting the start button and continues as long as the computer is running.It sounds similar to fan blades rubbing on something. This started while I was using the computer.
Info:
iPhone 4, Mac OS X (10.7.1)
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Aug 25, 2014
People iMacs are turning off. This has been happening to mine for months.Â
I have 24GB of RAM. I expanded it with memory from Crucial's website when I first got it. This problem seems to be getting worse. I come back to my computer to find that it has restarted itself. Â
The iMac is running OS X 10.8.5. The model identifier is iMac13,2.Â
Info:
iMac, OS X Mountain Lion (10.8.5), 24GB RAM 2.9 GHz i5
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Nov 1, 2010
How do you turn on the animation of the dock? I would like to see the stereotypical dock where the icons "jump" when you click on them...
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Jan 4, 2011
I feel a bit silly, but I've not been able to turn off the tone that happens after I turn on my iMac.
I've got the volume turned all the way down at the speaker icon, top right of screen
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Aug 7, 2009
I have a 24" 2007 iMac, the first aluminum ones, 4Gb of Ram and a recently upgraded HD to 1Tb (from a 320Gb failed drive). Recently, I have noticed that under some active usage, such as playing World of Warcraft or Excel, the screen will start to turn completely off for 10 seconds, and then back on for 10 seconds. It will continue to do this for about 3 hours, turning on and off every few seconds or 15 seconds. It will mostly turn completely dark but would also sometimes flicker. The curious thing, is that if I continue to keep playing, the screen would cease doing this after about 3 hours and then be completely normal and fine, but the next night.
The symptoms would repeat itself, and would consistently go away after active usage (3 hours or so). Imagine this, as if the iMac itself needs to be "warmed up" for 3 hours before normal usage. It would also appear that if I hit the machine (or tap it), this may sometimes bring a dark screen back to life for a few seconds. I plan to bring it to support, but I just want to get some ideas from you guys as to what this can possibly be.
Some of my guesses:
1) It cannot be software as physically hitting it or my dog barking would affect the rate and speed of the random turn Ons and Offs.
2) It could be a loose connector from my recent transportation of it while upgrading my HD, but then why would it become normal after 3 hours of usage?
3) Maybe something to do with RAM or video RAM? It is faulty, and thus only prolong heavy usage would "run it in" for the session? After not using it for a while, it goes back to its failed state?
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Nov 30, 2009
I tried googling this right after I bought my new iMac (on black friday). There is a little switch at the bottom of the magic mouse for turning it on/off. My question is every time I turn off my computer should I switch the button to the off position? Is there any benefit from leaving it on/off?
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May 4, 2012
Whenever I need to shut my computer down from the apple menu it hangs. It does the same thing whenever I try to restart it. It's annoying. The only way I can get results is to physically shut it off.
Info:
iMac, Mac OS X (10.7.2), 3.06 Ghz Intel Core Duo
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Sep 24, 2010
Windows user here that just ordered a 27" QuadCore iMac. Usually on my PC at home, whenever i'm not using it I turn off the monitor but leave the computer itself running most of the time (I run a lot of torrents, VNC, etc). Is there a way to turn off only the display and keep the computer running like I normally would on the PC?
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Nov 17, 2010
I have a first gen iMac 24 Intel with a dead logic board. However everything works in it. The screen, power supply, isite, speakers. appear to work fine. I got a MacBook Pro to replace it and I wanted to know if there is a way to turn the old iMac into something that is more like the Apple 24� display, even if I need to do electronics work in it.
I am in IT and have access to a lot of dead stuff I can scavenge for parts. I am also an electronic technician, so I should be able to do this. I just don�t know what I need to do.
Hunting down info on this topic has come with that there are controller issues. If I can pull a controller out of another dead LCD display that I happen to have, I can see it working. I can even see the possibility of adding the electronics from a USB hub to pipe USB functions over a DVI cable. And get the iSite and speakers working.
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Jan 13, 2009
I'm looking to turn my new macbook pro into an external mimic monitor for my new imac. ...like, so that I can move my mouse from the imac screen to the pro's screen. How do I do it? Is it possible to do it wireless?
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Apr 13, 2010
I've never owned an imac since I don't care for the AIO concept due to the fact that when your computer becomes obsolete, you lose the monitor as well, without any good reason. I really need a new computer, and as usual I'm thinking about the mini. The problem is that they are really slow and I need the hardware of the imac. I figured that buying an AIO, isn't that bad if you can still use the monitor even when the computer's hardware is obsolete. I've summed it up to a couple of questions:
1. Can you use the imac as a monitor for another computer without turning the enitre hardware on? Perhaps you can easily mod it, so that the monitor is the only thing working.
2. As a follow-up question, if something goes wrong with the imac, that isn't related to the monitor directly (i.e cpu, ram, hdd, etc..), could you still use it as a monitor for another computer?
If the answers to those questions are positive, I'll probably get a 27" imac.
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Nov 11, 2007
I have my iMac connected to my wireless router via ethernet, but also airport is on. At the top right I can see I am connected to my network. How can I chose the faster ethernet to connect without turning of airport? How can I be sure the connection is with ethernet and not wireless?
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May 27, 2012
A file folder with a question mark Appears on my screen when turning on. What does this mean and how do I fix it?
Info:
iMac
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Jun 25, 2014
My iMac doesn't come up after turning the power on,the logo keeps running but it doesn't start or open the screen.
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Sep 15, 2009
As you can tell by the thread title I've got one of the latest model iMacs and I'm running an LED Cinema Display as a second monitor. When it gets to the late hours I like to watch some movies on the Mac so I figured the Cinema Display would be a nice addition to do the job.
Now here's my issue: if it's late and I'm watching movies I tend to not have any lights on, but having one of the displays on means having both of them on, what I'm wondering is if it's possible to sleep one display while allowing the other to stay active so I can watch the movie without the light from the other one distracting
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May 11, 2008
Got a 2008 mac pro which sometimes switches it self on so that it loads up exactly in time for 1:00 at night.
There is no internet connection and all settings that I know of such as system update are off.
Is there a way of looking at some sort of log that will tell me why it boots up?
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Sep 10, 2010
I have an i7 MBP and this morning I discovered that its fan is turning on and off at about 2 second intervals. It only occurs when the lid is closed and (seemingly) when the battery is at full charge (i.e., the mag safe is green). As soon as I open the lid the fan comes on and stays on for 30 seconds or so then shuts off as if the system has cooled. Any ideas what this is about?
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May 19, 2008
I have an old powermac G4 dual 1.42 the other day I decided to power it up to update it and it would not turn on. I push the power button it lights briefly and goes out. The light stays on if I hold the button down. The fan does not come on nor any noise from inside the case, etc. I have reset the pram, that little button, and I have replaced the battery, I have searched for the problem but nothing seems to fit my exact case. It's not my main computer and I am no where near an apple store and I'd rather fix the problem myself instead of paying an arm and leg for apple to repair it.
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Sep 6, 2009
my volume keeps turning off. why?
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Jan 31, 2010
i'm having a small issue with my computer... Its not turning on
1) If i just press on the power button i just hear the optical drive shifting and then nothing.
2) If i hold down on the power button, the optical drive starts up, the hard drive starts up, the sleep light turns on.. glows a little then faints and nothing.
The screen never turns on in either case and i never hear the start up sound.I had this problem twice already and solved it by reseting the Pram and by trying to turn it on and off a few times ( eventually it just turned on.. ) . But this time i guess that just won't do.
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May 28, 2012
My macbook pro just went totally dark. I tried turning it off and then on again. It plays the opening music but the screen is black.
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Jun 16, 2012
My macbook pro late 20011 keep turning itself off, I will be in the middle of using it and the screen goes black and I cant get it to start up again for a few mins!
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Jun 21, 2012
My iMac is turning itself on and off in the middle of the night. How can I correct the situation?
Info:
iMac, Mac OS X (10.6.8), Just started happening
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Jul 1, 2012
Why is my Mac desktop not turning on? Yes....it's plugged in! =)
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Oct 5, 2010
I have an external hard drive attached to my MacBook Pro. Today my MacBoor Pro freezed and I had to turn it off pressing and holding the power button. After turning it on the external hard drive didn't appear in desktop. I checked the disk utility that comes with mac and it shows the HD but I can't mount it.
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Jan 10, 2011
We're having problems with the mail app sending mail.
Every link, support forum, etc. says to turn off authentication to fix the problem. However, HOW do you turn off authentication?!
Under Preferences-Accounts-Advanced there is the Authentication drop-down box, which has 5 options: Password, MD5 Challenge-Response, GSSAPI, APOP, and NTLM. I don't see an option for 'None' anywhere!
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Aug 6, 2005
I know people debate this like religion but if your sick of the mouse acceleration curve in OS X (like me) here is a GREAT utility for just turning it off...
[URL]
If you love the acceleration curve in OS X then disregard this post...
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