IMac Powers Down When On Sleep Mode?

Hello, I have been using an iMac at work and it just recently started powering down when left idle. This has been a reoccuring problem for a few days now and I would like to know a solution as soon as possible. Thank you.

Somebody? Anybody?

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How do you prevent the computer from shutting down when in sleep mode?

How do you prevent the computer from shutting down when in sleep mode and plugged in?

Thanks tjk.
Those are great suggestions and got me looking in places I had not considered before. Unfortunately, the problem remains. The System Preferences did not have the shut down option activated and there are no parental controls active on the computer.
Any other suggestions are welcome.
Brian

QOSMIO x870 shutting down when in sleep mode

I'm not sure if this is working as intended or not.
I was working with the ECO setting to put my computer to sleep after certain amount of time. Once it was asleep for a certain amount of time, it would go into a shutdown/hibernation mode. It turns back on in the state that it was in when it went to sleep.
Also, if I have a program running and lock the computer, it will act like this as well when there is sleep time set.
I thought that I would be able to lock my computer and run a download over-night, but when I went to my computer in the morning, my computer was shutdown/hibernating. It came back up to where it was, but it appears that it hadn't continued the download for much over an hour before shutting down.
I don't think that this is intended, but I may be wrong.
I'm still digging around trying to find settings in regards to this. But I have hibernate turned completely off.
Is there some way to set the computer so that it won't shutdown/hibernate when in sleep mode and/or a locked screen?
In the meantime, I'm trying setting the ECO settings to "Sleep :: Never" to try to accomplish my download without the computer shutting down/hibernating during the process.

Thanks tjk.
Those are great suggestions and got me looking in places I had not considered before. Unfortunately, the problem remains. The System Preferences did not have the shut down option activated and there are no parental controls active on the computer.
Any other suggestions are welcome.
Brian

Why iMac shuts off when in sleep mode? Using latest System (Yosemite)

Can anyone tell me why my iMac 27", running on the latest system (Yosemite), all of a sudden started shutting off when put in the sleep mode?

Try resetting the SMC.
Additionally, look at the log files around the time the system shut down.
You might also take it in for testing/diagnosis.
Barry

MBP shuts down when in sleep mode

I left my core i5 MBP 15 asleep during the day today with about a 85% charge. I opened the lid later this evening and the computer shut down and when I started it up, it only had a 58% charge. Please let me know what's going on or what I need to do. Thanks.

Tech. Support told me to send my laptop to them after too much of my time wasted. They were trying to make me install the Thinkpad Power Manager software and driver once again. They even said it was normal if your laptop shuts down after a few minutes or hours in sleep mode which is completely stupid unless the battery drained off and that's not the case.
And what's more important, my laptop was working faultlessly until I sent it to them for service. Then they changed the main board but they broke my LCD screen and caused the problem with Sleep mode. So I had to send it back, they changed the LCD with a 2005 HT14P12-100 when I had bought it in 2008 but they did nothing about the Sleep problem. And they want me to swallow that?
Ok, they'll collect it on Monday or Tuesday because I told them I was fed up and I didn't want it like that. I don't expect they'll solve the problem but I don't want it back until my Thinkpad works like it used to do before they put their hands on it.
Lenovo Thinkpad W500 4062-2XG (+2Gb RAM from Lenovo)
Windows 7 Ultimate x64 bits
No external monitors. No conflicting software.
Latest BIOS and drivers.

Yoga 13 Shuts down when in sleep mode...

I've always used sleep mode at night and quite frankly most of the time instead of shutting down my yoga. I know thats not good after reading some here but wanted to share history in case that has something to do with problem.
Typically at night or when leaving office or just going to be off computer for a while I'll close the lid (which is set for sleep mode) and when I return I open it up, enter my password and I'm right where i left off. I have multiple spreadsheets or power points open so it's easier than shutting those down every time or even at night. But since yesterday, when I open it back up, it has shut down and has to start up from "off" vs sleep. All things open have to be recovered (xls, docs, ppt, etc) and chrome says it has shut down unexpectedly and asks if I want to restore tabs, etc.
What is causing this change and how can I troubleshoot it and fix it?
Help much appreciated.

Right click on command prompt and select run as administrator. That should fix it and allow you to type that line

IdeaPad U400 shuts down when in sleep mode

My IdeaPad U400 shuts down when sleeping. All programs terminate.
I reviewed another poster's complaint about a similar problem several months. The response instructed the user to update the computer's drivers.
I have updated my drivers. My computer still shuts down regularly while sleeping. Please help!

Hi RuthAnne,
Welcome to Lenovo Community Forums!
I’m sorry to hear that the issue still persists even after re-installing the drivers as suggested in the previous posts, I also assume that you have updated the Video Driver(Win 7 or Win 8) & Chipset Driver (Win 7 or Win 8)specifically and checked if this resolves the issue.
If the issue is same even after installing the above mentioned drivers, please backup the Data in the computer to any external hard drive and perform OSRI (Operating System Re-Install) to check and confirm the issue is with the
OS (Operating System).
NOTE: If the computer is shipped with pre-installed operating System OSRI can be performed using the instructions in U400 User Guide click here, check the steps to perform OKR(One Key Recovery) on page 23.
Hope this helps!!!
Best Regards
Shiva Kumar
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Done everything, yet my Mac keeps shutting down when in sleep mode

I have reviewed all the topics here and nothing quite matches my problem.
When I put my computer to sleep, after about 30 minutes, it shuts down.
I have vacuumed the vents.
I checked Console for warnings (there are none).
I reset the SMU.
I reset the PRAM.
It is out of its warranty with Apple Care ... is my computer dying??
Any ideas what to do next?

ivanguy35 wrote:
I have reviewed all the topics here and nothing quite matches my problem.
When I put my computer to sleep, after about 30 minutes, it shuts down.
I have vacuumed the vents.
I checked Console for warnings (there are none).
I reset the SMU.
I reset the PRAM.
It is out of its warranty with Apple Care ... is my computer dying??
My 3.5 year old 20” G5 iMac recently started doing the exact same thing! It does not seem to be heat related, and there are no warnings in the console either, and it was not part of the ones identified with possible power supply issues.
I’ve checked all of the preferences and settings, ran Disk Warrior and Disk Utilities, checked file permissions (all were OK). Mine only seems to power down after it goes to sleep (but not every time), never in the middle of doing anything. So far, I’ve only noticed it when some of my external fire wire drives are powered up, but that could be a coincidence.
I was beginning to think it’s some sort of software bug, but I suppose it could be a hardware fault with the logic board. But since you are having the same issue, maybe it is software afterall. My software is totally up to date, but it seems that I’ve only started having this problem after installing 10.5.6.
Here’s my thread:
http://discussions.apple.com/thread.jspa?threadID=1867388&tstart=0

Macbook pro only powers on when in sleep mode

ok problem is ,... If i shutdown the macbook pro,...it will not power on when i press the power button .No fans nolight no nothin. In order to get it on i have to : first: unplug the battery, then attatch the magsafe power then, the computer will automaticly power on as if it was asleep ,...it does not wait for me to hit power. Then when it boots up and is completely up it tell me that my date has been reset to a date previous to dec 31 2008,...however the date and time when i go to reset them is current. computer will then behave fine until i go to shut it down . if i simpley close the lid,.. it goes to sleep and i can use the computer ,...if i shut down ,.. nothing and have to go thru all the steps again to restart . because of this i cannot reset nvram or smc. Any ideas?

godseye01 wrote:
... because of this i cannot reset nvram or smc. Any ideas?
Both procedures are performed after the Mac has been shut down.
SMC reset
NVRAM reset

IMAC Powers Down by itself, When it reboots only the Spot Light visable

Hi,
Hope someone can help, we have two Imac 20' G5 2ghz with 1.5gb Ram. Both system are crashing with the same problem.
The IMAC Powers Down by itself, and when it reboots only the Spot Light Field is viable, Only way to recover it is to rebuild OS. Sent the System back, and Both Logic board and Hardrive were replaced, and the day system crashed again did they same thing. We also have 2 Imac 20' G5 Isight Models working in the same envioroment and are not experiencing any problems with those systems. Any Ideas?

Sounds to me like you may have bad power supply units. I know of several people who had Rev B machines that were covered by THIS repair program.
Even though it says rev A machines are covered. It seems like some that were made early in the switch still used some of the components that were fingered out as not functioning properly. I would check your serial number.
Either way, give AppleCare a call, you should still be covered. And if you had some things replaced, like you said, let them know its doing same thing. Its for this reason that I have a hunch you are getting those old MBs that were having issues. Its more than the Power supply I sispect. Since you cant run it normally when it does power up, seems to me you may have several issues going wrong at the same time.
Hope you get it fixed.

Clicking sound that the iMac hard drive makes every 10 minutes or so when in Sleep Mode.

My iMac is 2 years old. I have noticed that when I put it to sleep, the hard drive makes a
clicking noise every 5-10 minutes. I had my Lacie hard drive set up for Time Machine, but
the iMac also seemed to be making the Lacie whir every so many minutes, too. I have since
temporariily shut off my Lacie, but the clicking sound persists. It also seems to me that at
times the hard drive also is trying to "run" or activate momentarily.
I never hear the clicking noise when I am using my iMac.
I read many posts about other iMac owners having a similar problem. One "suggestion" was that
the iMac is not really in sleep mode. I don't understand that since I use the Sleep prompt under
the Apple O.S. Icon. I read somewhere else that the clicking is the cooling of metal, or something
like that. That seems a "reach" to me.
Any suggestions (or directing me to a thread that specifically addresses this issue) would be
much appreciated.
In any case, if I need to call Apple Tech (I have 1 year left on my warranty coverage), I would like
to know if they have probably encountered this problem. Also, what would be a good way to explain
the issue, if you can advise me on that.
Thanks!

I have since called Apple Support about the problem. They did not solve it, but did offer to call back. I was unable to be home for the call back. I will call them again, but they did not seem to be aware of any "clicking" problems the iMacs were having.
I timed the clicking noises while the iMac was in Sleep mode; it is every 2 minutes almost consistently. (Not the 5-10 I mentioned in my first post.) Also, it then has a slight "whirring" sound after the "click" or "ping" as if it is trying to process something.
My iMac does not make the clicking/pinging noise while not in Sleep mode.
I have searched the Net and these forums repeatedly trying to find someone who has had a similar "clicking" sound. One fellow suggested his hard drive clicked in Sleep mode because it was looking for a printer. That is not the problem I am having, since all printer jobs have been completed.
If any of you could help me on this or direct me to a thread that addresses the issue, I would appreciate it immensely.
Thanks.

Strange noises when in sleep mode???

Hello,
Have had my brand new 27 inch iMac for about 3 weeks now. This is my first Mac computer. When in sleep mode the iMac sounds like it wants to start up and then there is a clicking sound. Just wondering if this is normal. . .or, should I shut the computer down?
Thanks.

To me any clicking sound is not normal unless on a Mouse or Trackpad. Do not delay to have it investigated, take a look at Apple returns and refunds from here.... http://store.apple.com/uk/help/returns_refund

10.9.5 my iMac shuts down when supposedly asleep

How can I stop my iMac shutting down when it is programmed to sleep. 10.9.5

How can I stop my iMac shutting down when it is programmed to sleep. 10.9.5

When in sleep mode iPhone 4 loses signal but when it's back on it searches and finds signal only recently doing this and because it's searching for signal battery not lasting very long please help

When in sleep mode iPhone 4 loses signal but as soon as its on again it searches and finds signal easily but because of this not getting calls or text msges and because it's searching for signal all the time battery not lasting

Here are some observations and a suggestion.
1) I mentioned before, that the number of views of this discussion forum is fast approaching 100,000. I suppose relative to all iPhones sold that is not a great percentage, but 100,000 still sounds pretty impressive to me. Consider also that many people probably have this same Sim problem and are not viewing this discussion forum because thay do not know it exists. How many people are REALLY experiencing this problem? Who knows. But I suspect it is more that 100,000.
2) To the best of my knowledge, Apple does not consult these forums as a guide to awareness of product performance. It may be company policy, but most of the time when I speak to an Apple employee they seem remarkably unaware of the "Top Stories" in the Apple Discussion Forum. This, despite the fact that my personal experience with customer service at Apple is excellent. So, as much as we of this discussion forum are confident SOMEONE important at Apple is reading all our posts and taking them to heart...I am not so sure.
3) I have been told over and over that the best way to gain Apple's attention regarding a problem is to post a comment on their Feedback Site. One comment about a problem is pretty worthless. 100,000 comments on the same issue, I'm guessing, will really get their attention.
4) Some folks have mentioned a recall to address this problem. Although such a thing is always a possibility, I don't see it happening. Why? When the brakes on a Toyota don't work, or that Toyata starts to accelerate without driver intention...well, that involves human life and the stakes are quite high. For many reasons you would see the automotive industry eventually be forced into a recall program under such a situation. But, a phone APPEARS to not nearly be such a life and death device. Or is it? My daughter's iPhone 4S developed a "SIM FAILURE" on the same day her car broke down in the middle of the very rural area we live at around 10:00 pm. She is 17 years old and was coming home from high school play practice. You can imagine the anxiety I and her mother felt when she did not arrive home on time. She eventually walked about a quarter mile to a house of a stranger and had to ask to use their phone to call us. Now, I am not saying that strangers where I live are not to be trusted. But, in addition to being worried out of my mind, I was not happy that an inoperative iPhone 4S caused my daughter to be put in this situation. My biggest concern now is...when will my daughter's iPhone become inoperative again due to SIM FAILURE?
5) The more folks in this discussion forum who post a comment about this issue in Apple's feedback site the more pressing this issue is going to be perceived by Apple. So, I like others, encourage all of you to do so. If this seems like a lot of effort, I offer you these few sentences below that you could just copy and paste into the feedback site.
The link to feedback site is: http://www.apple.com/feedback/
Feel free to use copy/amend/whatever the following as you wish:
Dear Apple,
I wish to register a strong concern about my iPhone's unpredictable inoperability due to failures somehow associated with it's SIM technology. For me, I do not consider this just a significant lack of convenience, but a significant safety issue. Should I need my phone in an emergency situation where it is experiencing a SIM FAILURE, I believe the iPhone will have put me at risk. I would ask you to please give fixing this problem your greatest priority and effort.
Sincerely, XXXX

OS X Lion: Fix for wireless not reconnecting when exiting sleep mode

http://www.tech-recipes.com/rx/18931/os-x-lion-fix-for-wireless-not-reconnecting -when-exiting-sleep-mode/

I have the same symptoms with a 2011 iMac and my Senheiser Bluetooth headphones.
10.7.3 did not correct this bug.
I'm also using MS Messenger and notification sounds are also buffered until the headphones are switched on.
I found other threads dealing with this bug :
https://discussions.apple.com/message/5962104#5962104
https://discussions.apple.com/message/12837199#12837199
http://apple.stackexchange.com/questions/26991/os-x-lion-mail-app-sound-effects- bug
https://discussions.apple.com/message/15856803#15856803
I'm currently trying the tip given in the last discussion :
"Success - in the Audio Midi Setup (Applications/Utilities) I changed the output to 2ch - 32bit Float and all the audio works well."
My headphones already had this setting, but internal speakers had 2ch - 24bit... is it a possible explanation ? Time will tell ...

IMac Powers Down When On Sleep Mode?

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