Shuts down instead of logging in

When I go to log in, my computer shuts down instead of logging in, after I've entered my password and hit enter.
My computer has been acting a little odd lately, closing Safari while I'm using it, freezing for unusually long periods of time, etc. I had my hard-drive replaced almost a year ago (it's a 2012 Mac), so I don't know if this is part of a bigger issue? I really need this to be fixed for school.

If you do not have a backup, please do so (if you can).
Try running an Apple Hardware test:
http://support.apple.com/en-us/HT201257
Note that an error free AHT is not definitive.
I would also reinstall the OSX.
Ciao.

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IMac G5 shuts down instead of going to sleep

Recently, my G5 iMac started shutting down instead of going to sleep. I have reset all of the sleep controls but it still shuts down. Does anyone have any ideas? I am running 10.5.5

Have you vacuumed the fans and the air vents? You can also reset the [SMU|http://docs.info.apple.com/article.html?artnum=300908] and check in Console>system log for any messages about "maximum temperature exceeded for 30 seconds".

Shutting down instead of sleeping..

For some reason, my Mac keeps shutting down instead of going to sleep. I've checked all the settings and nothing I can find is set to shut down. Any idea what is going on? Possibly related... my Dashboard stuff keeps disappearing (see post in Finder,Dock discussions) Hope someone can help!

Any time you have problems with power management or sleep/wake or shutdown/boot there are a few basic steps to try. These apply both to Tiger (10.4.x) and Leopard (10.5.x) versions of the Mac OS.
First, reset the low level controller in your computer that handles power management and sleep/wake functions (including scheduled events). In an intel-based Mac that is the SMC. In a powePC-based Mac that is the PMU. To do this, go to the main Support page here and search for "reset SMC" or "reset PMU" as is appropriate in the search field at the top LEFT of that page. In the list of Knowledge Base articles returned, find the instructions specific to your model of Mac. It is not tough to do, but you do have to find the instructions for your specific Mac. Note that resetting a PMU may require you to manually adjust the date and time (System Preferences / Date & Time) the next time you log in.
Next, reset the Parameter memory (PRAM). PRAM holds copies of various system settings for rapid access and if it gets out of whack all sorts of odd things can happen. The instructions for resetting PRAM are the same for all Macs. Shut Down the computer. Locate the 4 keys Apple-Option-P-R. Press and hold those 4 keys, and while doing so, press and release the power button. Keep those 4 keys held down until you hear the SECOND startup chime, then release them. Your computer will continue to boot up normally.
Finally, perform a Safe Mode boot. A Safe Mode boot does some maintenance tasks in the background such as repairing critical system file permissions and deleting some cache files, etc. To do a Safe Mode boot, hold the "shift" key while booting until you see the spinning gear on the gray Apple screen. Be patient, this will take a while. Eventually you will get to a log in window that includes a notation that you are booted in Safe Mode. No need to log in as the maintenance stuff has already happened. So just Shut Down from there and reboot normally.
If your Sleep problem persists after these three steps, take a look in the Console to see if any helpful error messages are being thrown (Applications / Utilities / Console -- select "All Messages" in the column on the left). Now even during a NORMAL boot and log in, there are a lot of Console messages generated, some of which can look pretty scary if you are not used to them. But a normal Sleep or Shut Down should generate very few messages, so scroll back in the list to the time where you tried to put the computer to Sleep and see what you find.
--Bob

Late 2012 Mac mini with OSX 10.8.2 has started shutting down instead of going into sleep mode.

Sometime in the last week or so my mac mini has started going into full shut down instead of sleep mode.
I have tried checking and unchecking energy saver boxes but haven't found anything which will get me back to where I used to be - and I haven't knowingly changed anything to make this happen.- maybe an OS update caused it?
The machine will fire up with a tablet click rather than needing the reset button to be pushed so clearly the machine is sort of halfway between sleep and full 'off'. Most frustrating as one of the key issues for me in getting this my first mac was its easy sleep and super quick fire up compared to windows.
Any help appreciated
Oh yes I just remembered that I did just install 2 8gb of crucial RAM (to replace the supplied 2 2gb but surely that can't have anything to do with it - can it)?

Adding to my first post I can now advise that when the mac goes into sleep mode the light on the front stays on (it does not pulse so clearly it is not really sleeping).
When i click the tablet / keyboard this is actually what triggers the mac to reboot
I have tried resetting the SMC as per the following link to no avail
http://macs.about.com/od/usingyourmac/qt/Resetting-The-Smc-System-Management-Con troller-On-Your-Mac.htm
Help please!

After installing Mac OS 10.5.8 my 2005 iMac G5 shuts down instead of sleeping

After install of OS 10.5.8 my iMac G5 - 2005 model, no Intel processor - whenever I choose sleep from the Apple menu or the time-out goes to sleep mode the computer shuts down instead of sleeping. Any insight would be appreciated.
Thanks.

Try using Disk Utility t repair your disk
   1. Insert the Mac OS X Install disc that came with your computer, 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. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
   5. Select your Mac OS X volume.
   6. Click Repair. Disk Utility checks and repairs the disk.
Then reboot and repair permissions from your internal drive.
Miriam

My Power Mac G4 shut down instead of sleeping

Is there anyone out there having this problem..?
When I put my PM to sleep it shut down instead. If I try to restart it right away it starts booting but fails after a couple of seconds and shut down again. If I wait for a longer while it starts like it should!?
I have tried to replace the backup battery with no luck.
Power Mac G4 "Quicksilver" Mac OS X (10.4.8)

Hi! - I had a similar problem with my G4 which I bought second hand. It would sleep and then when I tried to awaken it - it would then shut down. Long story short - it had a third party Airport card which I removed as I did not need it - problem solved! Seemingly third party bits and pieces can sometimes cause this problem.
Hope this helps.
G4 Power Mac Mac OS X (10.3.9)

IMac shuts down instead of sleeping

Hi everybody. Forum newbie here. I'm having a bit of trouble with my iMac. First of all, it's a G5 with 2.0 GB of facory installed RAM, and running OSX 10.4. I bought it barely used from a friend and when I first got it in the spring it shut down instead of going to sleep a couple of times. It wasn't a big deal, since it was overnight and not in use at the time. From then on it was fine. Over the past few days however, it has started doing this again, and much more aggressively.
It seems that it doesn't go to sleep at all anymore. It just shuts down. If you put it to sleep it will shut down. If it goes to sleep on its own, it shuts down. I went into the preferences panel and set it so it never goes to sleep and the monitor shuts down after 2 hours. I left it and went back to it after about 20 minutes and it had shut down. This happened repeatedly last night, causing me to waste 6 or 7 DVD-R, as I was attempting to burn one and it would shut down during the burning process. I had a pretty bad case of computer-induced Tourrette's syndrome I've gotta say.
As long as it's in use, there's no problem, but if you leave it alone for any length of time over say 20 minutes it seems that it's going to shut down regardless of your energy saving settings. And it doesn't seem to sleep at all anymore.
I do lots of video work and between burning DVDs and rendering video, I frequently need to leave the computer alone and let it do its thing. If it's going to shut down every time I leave it alone, then that makes my work impossible, or at least extremely annoying as I will have to run back and forth every 10 minutes to jiggle the mouse to make sure it doesn't go to sleep.
Anyone know what might be causing this or how to fix it? Thanks so much!
iMac G5, eMac G4 Mac OS X (10.4.7)

Welcome to Discussions. Which model do you have? If it's a Rev A (not ambient light and no iSight), then you might qualify for the Repair Extension Program. In any case, try and reset your PMU/SMU. PLease post back,
Miriam

Cannot shut down restart or log out

Hi,
My new macbook pro cannot shut down restart or log out. When click shut down restart or log out. it does NOTHING. no screen comes out, no window telling me that an application is stopping the shut down, just nothing. After I try several times to shut down, I can continue using my macbook normally as if I didnt try to shut down at all. What should I do? What is wrong?

What happens when you press the power button? It should bring up a dialog box asking if you want to Restart, Sleep, Cancel, or Shutdown.
Also, try it from the terminal prompt. The Terminal application is in the Utilities folder. The Utilities folder is in the Applications folder.
Once you've launched Terminal, type:
sudo shutdown -r now
Enter your login password when prompted.
This should initiate a reboot.

Mountain Lion won't sleep, shut down, restart, or log out.

Hi All,
After Mountain Lion my 2010 iMac 27" won't sleep, shut down, restart, or log out.
Basically most functionalities of clicking the apple icon are disabled - "About this Mac" doesn't work either.
Please help!
Before Apple fixes this, is there another way of putting my Mac to sleep or shut down?

Just adding another voice to the chorus. Since upgrading to Mountain Lion my computer will not sleep. The cursor freezes when I try to invoke sleep but the computer and monitor remain on. The cursor unfreezes when I tap the spacebar the way I would normally do to wake from sleep. Fortunately, shutdown, restart and logout function normally, so I guess I should count my blessings. This isn't my only problem with Mountain Lion, but I didn't want to muddy the waters on this thread with other issues.
Dual quad-core MacPro3,1

Why is my computer shutting down instead of sleeping?

My comptuer is shutting down instead of sleeping. I have looked at my preferences a million times and nothing has changed regarding my sleep time or any other options.
I looked at another forum answer and tried resetting the SMU by unplugging the cord and holding the power button. That did not solve my problem. What should my next steps be? Should I reset PRAM? Should I suck it up and deal and bring it into a store? I am covered until October.
Please help. Thanks!

Check System Preferences > Energy Saver > Schedule

MacBook pro shuts down instead of sleeping while connected to power adapter

Hi there,
I am currently facing a rather strange issue. My old MacBook pro (about 2 years old) shuts down instead of sleeping but only when it is connected to the power adapter. I mean it goes to sleep mode perfectly well when it works only with the battery. Is it a know issue ? I'm running 10.5.6 and this problem is quite new to me (happened the first time some weeks ago).
Thank you in advance for your answer.

You might try resetting the SMC and see if this helps:
http://support.apple.com/kb/HT1411?viewlocale=en_US
Good luck!

Shuts down instead of sleep

I have tried everything! I have even restored to factory settings and the problem still exists. Instead of going to sleep my computer shuts down. I have checked power options and they look fine however when I change anything in the options it still shuts down instead of sleeps. I am thinking this must be a windows update issue but don't know which one. I have tried everything on every forum I found but no luck. Please help!
TIA

Not sure what to look for with USB software, I haven't really installed
anything that I know of is there a list of this USB online somewhere? The
laptop was new in August 2014, I got the Windows 8.1 update like the other
person did and it took forever. I think he counted 120 software updates. I
did not count them but it sure took a long time. That was about 3 months
later in November. Ever since then I've had the same problem and have tried
different things to circumvent it. It certainly appears to me that the
Lenovo has a severe bug in wakening from hibernate in 8.1 that was not
there in 8.0. And they should fix it. I'm about ready to throw the darn
thing out. Most of the time it doesn't come back from hibernate, you can
hear the fan run when you open the lid but it does not come up. other times
it does nothing until you press and hold down power. I thought HP was bad.
Makes me scream Apple!

Cannot shut down, restart, or log off iMac

I have an iMac with OS 10.5.2. I use the Virus Barrier virus protection program and have not had any problems with it. However, immediately after installing the latest Virus Barrier update, my computer began acting strangely.
Most importantly, since that time I have not been able to shut down, restart, or log off my computer. When I try to take any of these actions, I get the standard message box asking, for example, "Are you sure you want to shut down your computer now?" I click on "Shut down" and the desktop icons and the menu bar disappear but then nothing at all happens. Sometimes, after a while, I may get a message saying that the action "timed out." I then click on the Finder icon on the dock, and the desktop icons and menu bar reappear. I've tried force-quitting the Finder, but that did not work. Even if I manually shut off the power, when I turn it back on, the desktop immediately appears without the usual beep and without going through the normal startup procedures. It seems that even when I turn off the power manually, the computer itself does not actually shut down.
Additionally, my screen saver no longer works. Although I have it set to come on automatically, it never does.
I contacted Virus Barrier support which advised me to uninstall the program. I did, but that did not help the problem. I've tried "Repair Disk Permissions" in the Disk Utility application, but that did not help either.
Apart from the above, I still seem to be able to use the programs on my computer with no problem.
Does anyone have any idea what is causing this problem and what I can do about it?
Thank you.

DO NOT JUST PULL THE PLUG! Press and hold the power button until it shuts down fully. This can take several seconds. Once you are sure the fans are off, click the mouse a couple of times to make sure there is no response, then you can pull the plug, to be sure.
I suggest that you then start up in Safe Mode by holding the Shift key as soon as you hear the chime. The OS should start in the normal fashion, except you will see a Safe Boot legend.
Once you've logged in, bin the Finder .plist as suggest, and I'm make sure that all the Virus Barrier files are well and truly gone as well. Don't forget to check /Library/StartupItems and ~/Library/StartupItems. Once you reboot, things should be back to normal.
As suggested, AV programs are pretty much a waste of CPU on a Mac. If you really must have one, I recommend ClamXAV. Apart from anything else, it's free.

Macbook shuts down instead of sleeps

I have a 2ghz core duo macbook (modle No. A1181 (EMC 2092)) that I recently restored from a time machine backup. It was at 10.5.5 and now its at 10.6.8. So, right now I close the lid of the macbook and immediatly shuts down instead of sleeping. The previous macbook (the one I made the back up from) didn't have this problem and nor did this one before the upgrade. I have already tried resetting the smc and the pram. Anyone have any ideas?

Having never shutdown my laptop, I was guessing on its reaction to closing the lid. So, I shutdown my MBP and closed the lid. It did continue the shutdown, so there seems to be a problem with yours.
Sometimes, sleep and shutdown issues can be solved by resetting the SMC

IMac shuts down itself (or log off) when I leave it even if working

My iMac shuts down itself when I leave it for a few minutes even if working, just as example, when rendering a movie. Every time I leave the computer for more than 30 minutes, I come back and I find the first screen. (actually I don't know if the iMac shuts down or just log off)
Anybody knows ?
Thanks
Max

Hi Max
Welcome to Apple Support Communities
There are two levels of sleep, Display Sleep and Computer Sleep.
Go to: Apple > System Preferences > Energy Saver > and set Computer Sleep to Never and Display to Sleep after 10 or 15 minutes. That way the Computer will stay awake, but the Display will Sleep if your not sitting there doing something on it.
Also if you want to disable the password after Computer Sleep, go to System Preferences > Security > General and uncheck the Require password box.
Dennis

Shuts down instead of logging in

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