What causes unexpected shutdown and restarts

ok last night my IPhone was really hot so I looked at it and it said 20% battery and it gave me the full battery sing. So I unplugged it than I shut it down for like 30 min and turn back on than I start charging it and talking on Skype with it. So before I went to bed. I shut it down and then when I woke up this morning I went to go plug it in. Than I got the Apple Logo when you first turn it on and then like 15 to 20 sec latter it turn off for no reason and it repeats that over again. I can’t get pass the Apple logo without restarting.

yeah it worked some what. it went in to and now i cant get out i need to get in to. you would not know how to get out of RECOVERY mod and in to DFU mode?

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MacBook Pro shutdowns and restarts unexpectedly

Hello,
I have a problem with my MacBook Pro because it shutdowns and restarts unexpectedly?. Also, suddenly it goes frozen and a beep starts, Do you know what mught be occurring?. Thanks.
Eduardo

Hello Eduardo
It sounds like an issue with the RAM on your MacBook Pro. The idea is to see if you can reseat the RAM and if you cannot, then you would need to talk to an Apple Store or an Apple Authorized Service Provider for additional support.
Intel-based Mac Power On Self Test RAM error codes
http://support.apple.com/kb/ht2341
Regards,
-Norm G.

I have two wireless networks that I switch back and forth. Everytime I switch the network zone my macbook pro hangs and I have to do a hard shutdown and restart. What is the fix?

I have two wireless networks that I switch back and forth. Everytime I switch the network zone my macbook pro hangs and I have to do a hard shutdown and restart. What is the fix?

Create two locations in Network, one for one and one for the other.
WiFi, Internet problems, possible solutions
WiFi security issues, at home and WiFi hotspots

My macbook pro is frozen on desktop mouse no response i have forced shutdown and restarted 3 times no change. What to do ?

Hi guys and gals
Have not used my macbook pro for couple of months and now she is frozen - opens to wallpaper on desktop of snow leopard but absolutely no response with mouse or track pad . Screen goes blank after 5 mins then the only response is from the power button . When pressed the screen lights up with window asking if i want to shut down or.....enter has no response . Only option is to force shutdown and restart yet this does not resolve issue.....back to square one!!!!
Help???

If you have more than one user account, you must be logged in as an administrator to carry out these instructions.
Launch the Console 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 Console in the icon grid.
Select the most recent panic log under the heading System Diagnostic Reports on the left. If you don't see that heading, select
View ▹ Show Log List from the menu bar. Post the entire contents of the panic report — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

Macbook pro 15 inch can't shutdown and restart normally

My macbook pro 15 inch can't shutdown and restart. I reinstalled the system but the problem still had.what's can i do?
Many thanks

Shutdown the machine until you can take it to a Apple repair/store and get a new adapter or contact the person you might have switched it with.
Your document isn't worth a few thousand dollar machine, use something else to finish it.

Random shutdowns and restarts...where to begin?

This is a client's machine.
It is a second generation G5, 17". It passes all TechTool tests. We have the back cover removed to check for overheating. Thus far, we have not been able to duplicate the problem of the shutdowns and restarts...but the machine is essentially idle all day. The processor is not really being used, so it is not an accurate test.
1. Is there are software utility that will put a load on the processor so that we can recreate the issue?
2. Does this have any known heating issues, like the 20" of this series that were recalled?
Thanks in advance for any help.
G5 Mac OS X (10.4.8)

One not uncommon cause of this problem can actually be the very simple matter of a misaligned power cord collar, Bailey's Dad - see http://docs.info.apple.com/article.html?artnum=86817
This might also help to explain why the behviour hasn't been easy to replicate after the move and with the back taken off. Maybe it is now properly seated!
Putting it under load would be a good idea , though. A power supply issue is not out of the question. The SETI "BOINC" software - http://setiathome.berkeley.edu/ - can be used to create an ongoing artificial load. Playing or rendering videos works pretty well (as Miriam has already suggested) too though. So does running "Classic" applications, using the Classic OS9 emulation.
Printing will provide a short term load on the processor and power supply, too.
THe "Rev B" extended repair program that Miriam has linked to only applies to the 20" model , I'm afraid, not the 17".
Cheers
Rod

Why do I get a popup message in multiple languages requiring a shutdown and restart

Why do I keep getting a popup message in multiple languages requiring a shutdown and restart? Has been going on for a few months. Because of the shutdown reports have been sent to Apple upon restart.

After it restarted, did you see a dialog box resembling this one:
If so, next time it occurs click Report...
Before you send it to Apple, copy the text of the report. Paste it in a reply. Remove or obscure any personal information, should it appear.
If problems continues to occur please determine if they also occur in "Safe Mode":
Safe Mode or "Safe Boot" is a troubleshooting mode that bypasses all third party system extensions and loads only required system components. Read about it: Starting up in Safe Mode
Starting your Mac in Safe Mode will take longer than usual, graphics will not render smoothly, audio is disabled on some Macs, and some programs (iTunes for example) may not work at all.
To end Safe Mode restart your Mac normally. Shutdown will take longer as well.

I have a mac OS X and when I close it and reopen my screen opens and then shuts down for an instant and then reopens. Does anyone have this occur?? I have shutdown and restarted often.

I have a mac OS X and when I close it and reopen my screen opens and then shuts down for an instant and then reopens. Does anyone have this occur?? I have shutdown and restarted often.

A Safe Mode boot might help ..
Startup your Mac in Safe Mode
A Safe Mode boot takes much longer than a normal boot so be patient.
Once you are in Safe Mode, click Restart from the Apple () menu.
See if the problem persists.

Elgato video to USB has become unreliable after shutdowns and restarts

I have Yosemite 10.10 on an early 2009 iMac, and an Elgato Video capture device with latest software (1.1.5)
The messages "Device could not be initialized" and also "Please connect your Elgato Video capture hardware to any USB 2.0 port" come up after I have had a shutdown and restart.
For 2 or 3 years i have operated this system with no trouble, but as the iMac software became upgraded, and also the Elgato S/W upgraded, the problem has come up, so now I am reluctant to shut down. However, there are times it must be, such as when the power company shuts service down for maintenance - happens a lot lately. I have tried different ports, and done the unplug and replug routine, but it takes dozens or even hundreds of attempts until one time it works. then i have to be sure not to "quit" after a recording session, or the problem comes up all over again. Also I tried using a USB hub, with no success. Also, I have tried to reset of the USB bus routine (Command-Option-P and R keys during startup) with no success.

Get rid of CleanMyMac and DivX. Add much more RAM. You don't have nearly enough for all that you are trying to load.

System fails to shutdown and restart in addition to keyboard freezing HELP!

System fails to shutdown and restart in addition to keyboard freezing HELP!

Try resetting your SMC.
Resetting the System Management Controller >>
Boot from your system CD, run Disk First Aid from your Disk Utility and repair your permissions.
-Bmer
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My computer, running on Lion, randomly flashes with crazy lights and colors. Doesn't happen often, but when it does it's totally random. What causes this problem and how can I solve it?

My MacBook Pro, running on Lion, randomly flashes with crazy lights and colors. Doesn't happen often, but when it does it's totally random. It looks like the Northern LIghts!!!
What causes this problem and how can I solve it?

Really? Oh I get it. You're the kind of person who goes on tech message boards to make jokes - or friends.
Well, I'm trying to solve this problem - which is a rather annoying way to spend a Saturday.
SO either help or don't reply.

Facetime auto shutdown and restart

After using FaceTime on my ipad mini and iphone 5 for 3 - 5 mins, the device will shutdown and restart back or turn to blue screen then restart back. I try to reboot using the home plus sleep button and reset network setting, but the result still the same

Try this:
1. Close all inactive apps. Double-click the Home button and hold apps in the Task Bar down until they all wiggle then tap the minus sign to close apps. Tap the home button to return to Home screen.
2. Hold the Sleep/Wake and Home button down until you see the Apple Logo.

T420 Intel i7 with Windows 7 64 Bit Home Premium Laptop Shutting down Unexpectedly and Restarting

Hi ,
I purchased the Lenovo Think Pad T420 in May 2011, I am facing the problem windows unexpectedly shutting down and restarting. Can anyone suggest me whether any SP needs to be applied or what is causing the issue. Please find the error message i got below.
Problem signature:
Problem Event Name:                        BlueScreen
OS Version:                                          6.1.7601.2.1.0.768.3
Locale ID:                                             1033
Additional information about the problem:
BCCode:                                               116
BCP1:                                                    FFFFFA8008F0E010
BCP2:                                                    FFFFF880082458F0
BCP3:                                                    0000000000000000
BCP4:                                                    000000000000000D
OS Version:                                          6_1_7601
Service Pack:                                       1_0
Product:                                               768_1
Files that help describe the problem:
C:\Windows\Minidump\030812-25880-01.dmp
C:\Users\Home\AppData\Local\Temp\WER-65582-0.sysdata.xml
Read our privacy statement online:
http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409
If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

As you are facing issue with Bluescreen, kindly update the windows and also update the Bios of your Notebook from the below mentioned web link.
http://support.lenovo.com/en_US/downloads/default.page?
Now please check if the issue resolved.
Regards,
Sameer
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Extremely long shutdown, and restart times

All right, I am wondering if anyone has had any trouble with their MacBook taking an inordinately long time to shut down? Mine takes a good 5 minutes to shutdown or restart. On a restart as soon as it resets to the apple screen it only takes a few seconds to start up but the shutdown time is unbearable. Anyone got a fix for this?
(I have upgraded to a gig of ram, but I can't see how that could be the problem. It was ordered directly from Apple and installed by the authorized retailer where I purchased the Mac. I'm sure it could still be a problem but it seems to function perfectly fine otherwise, so I doubt that is what is holding up the shutdown.)
MacBook Mac OS X (10.4.8)

Hi Ace,
try some system maintenance first: Mac OS X 10.3/10.4: System maintenance
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Thinkpad x1 carbon unexpected shutdown and freezing during manual shutdown

Ever since i got my x1 carbon i've been experiencing constant unexpected shutdown issues. Ill leave my laptop on for a few minutes unused and when i come back it'll be turned off and when started back up it will prompt me that the computer has recovered from a unexpected shutdown. There are also numerous of times where i would attempt to put my laptop to sleep or shut it down manually and the screen will go black, however the laptop doesnt shutdown or goes into sleep mode, but instead freezes with a black screen. I've sent in my x1 carbon in once due to a harddrive failure where the computer wont even start up windows at all, the technician informed me that they put a new ssd in and ever since i got it back these issues still occur. Can some one please help me here? these occurance are getting more frequent and i'm afraid i might have to send in my laptop again due to harddrive failure.

Hi, kuelderrek
Could you possibly go into Event Viewer and look at the Windows Logs, and then take a screenshot of these logs and post them here? I'd also recommend making sure all the drivers for your system are up to date, just to make sure they are not causing any issues. You can find all the drivers for your system here.
Best,
Adam
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What causes unexpected shutdown and restarts

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