Computer shuts down and starts up by itself. I have 27" mid-2011 model. Has been like this for 2 years now. The hard drive and the mother board has been replaced already. No help, the problem still returns.

Question

Ankkatonkka Author

Level 1

8 points

Computer shuts down and starts up by itself. I have 27" mid-2011 model. Has been like this for 2 years now. The hard drive and the mother board has been replaced already. No help, the problem still returns.

This morning it started again.

When I write the word "shut" to console it says:

kernel[0] Previous shutdown cause: 0

locationd[55] locationd was started after an unclean shutdown

kernel[0] Previous shutdown cause: -128

locationd[55] locationd was started after an unclean shutdown

locationd[54] locationd was started after an unclean shutdown

kernel[0] Previous shutdown cause: 3

Yosemite is installed. But the problem has happened with every operating systems.

Disk utility can't find any problems.

No usb or other devices are connected.

I deleted the file: com.apple.PowerManagement.plist (someone suggested that it may help)

I think it's not the matter of heat, because the problem occurs right away when starting my comp.

With a safe mode it sometimes stays up for hours. So could it be a problem with applications, rather than hardware?

Help is highly appreciated! 🙂

Thank you!

iMac (27-inch Mid 2011), OS X Yosemite (10.10.1)

Posted on Feb 25, 2015 11:27 PM

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Answer 1

MichelPM

Level 10

80,958 points

Feb 26, 2015 4:26 AM in response to Ankkatonkka

It feels to me that you may have reinstalled problematic software that was giving your Mac issues prior to the new hard drive and logic board.

Installing/upgrading your OS X system does NOT cure previous software issues with your Mac. In fact, it can make the problems worse.

You have, obviously, reinstalled something that was problematic to your Mac at an earlier time and continues to plague your Mac.

It would help us to help you if we could have some more technical info about your iMac.

If you like, please go ahead and download, install and run Etrecheck.

Etrecheck was developed as a simple Mac diagnostic report tool by a regular Apple Support forum user and technical support contributor named Etresoft.

Etrecheck is a small, unobstrusive app that compiles a static snapshot of the current state of your entire Mac hardware system and installed software.

This is a free app that has been honestly created to provided help in diagnosing issues with Macs running newer versions of OS X.

It is not malware and can be safely downloaded and installed onto your Mac.

http://www.etresoft.com/etrecheck

Copy/paste and post its report here in another reply thread so that we have a complete profile of your Mac's hardware and installed software so we can all help with your Mac performance issues.

Thank You.

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Answer 2

Linc Davis

Level 10

209,541 points

Feb 26, 2015 11:22 AM in response to Ankkatonkka

You still have a hardware fault. It may be a bad memory module, or perhaps the replacement logic board is also bad. That's not unusual.

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Answer 3

Ankkatonkka Author

Level 1

8 points

Feb 27, 2015 6:21 AM in response to MichelPM

Thank you, I did ran etrecheck.

Here's the result.

Now my computer did shuts down even in safe mode, sometimes in seconds.

So I have to keep this short.

Hardware Information: ℹ️

iMac (27-inch, Mid 2011)

iMac - model: iMac12,2

1 2.7 GHz Intel Core i5 CPU: 4-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1333 MHz ok

BANK 1/DIMM0

2 GB DDR3 1333 MHz ok

BANK 0/DIMM1

Empty

BANK 1/DIMM1

Empty

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

AMD Radeon HD 6770M - VRAM: 512 MB

iMac 2560 x 1440

System Software: ℹ️

OS X 10.10.1 (14B25) - Time since boot: 0:2:47

Disk Information: ℹ️

ST2000DM001-1CH164 disk0 : (2 TB)

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / : 2.00 TB (1.68 TB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

OPTIARC DVD RW AD-5680H

USB Information: ℹ️

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Computer, Inc. IR Receiver

Apple Internal Memory Card Reader

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/Library/Extensions

[not loaded] com.wacom.kext.ftdi (1 - SDK 10.9)

/System/Library/Extensions

[not loaded] com.wacom.kext.wacomtablet (6.3.10 - SDK 10.9)

Problem System Launch Daemons: ℹ️

[failed] com.apple.systemstatsd.plist

[failed] com.apple.ucupdate.plist

[failed] com.apple.watchdogd.plist

Launch Agents: ℹ️

[not loaded] com.adobe.AAM.Updater-1.0.plist

[not loaded] com.adobe.AdobeCreativeCloud.plist

[not loaded] com.wacom.wacomtablet.plist

Launch Daemons: ℹ️

[not loaded] com.adobe.adobeupdatedaemon.plist

[not loaded] com.adobe.fpsaud.plist

[not loaded] com.microsoft.office.licensing.helper.plist

User Launch Agents: ℹ️

[not loaded] com.adobe.AAM.Updater-1.0.plist

[not loaded] com.adobe.ARM.[...].plist

[not loaded] com.spotify.webhelper.plist

User Login Items: ℹ️

iTunesHelper Ohjelma (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Spotify Ohjelma (/Applications/Spotify.app)

SpyderUtility Ohjelma (/Applications/Datacolor/Spyder4Pro/Support/SpyderUtility.app)

Internet Plug-ins: ℹ️

AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7

FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6

QuickTime Plugin: Version: 7.7.3

AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6

AdobePDFViewer: Version: 11.0.10 - SDK 10.6

Flash Player: Version: 16.0.0.305 - SDK 10.6

Default Browser: Version: 600 - SDK 10.10

SharePointBrowserPlugin: Version: 14.1.0

Silverlight: Version: 5.1.30514.0 - SDK 10.6

WacomTabletPlugin: Version: WacomTabletPlugin 2.1.0.6 - SDK 10.9

3rd Party Preference Panes: ℹ️

Flash Player [Click for support]

WacomTablet [Click for support]

Time Machine: ℹ️

Mobile backups: OFF

Auto backup: NO - Auto backup turned off

Volumes being backed up:

Macintosh HD: Disk size: 2.00 TB Disk used: 316.51 GB

Destinations:

My Book [Local]

Total size: 2.00 TB

Total number of backups: 8

Oldest backup: 2013-11-03 12:06:31 +0000

Last backup: 2015-02-17 10:06:36 +0000

Size of backup disk: Adequate

Backup size 2.00 TB > (Disk used 316.51 GB X 3)

Top Processes by CPU: ℹ️

2% WindowServer

0% AppleSpell

0% ps

0% fontd

0% launchd

Top Processes by Memory: ℹ️

94 MB Finder

86 MB WindowServer

73 MB Spotlight

69 MB com.apple.internetaccounts

64 MB NotificationCenter

Virtual Memory Information: ℹ️

589 MB Free RAM

1.91 GB Active RAM

1.34 GB Inactive RAM

451 MB Wired RAM

1.04 GB Page-ins

193 KB Page-outs

Diagnostics Information: ℹ️

Feb 27, 2015, 12:16:17 PM /Library/Logs/DiagnosticReports/WacomTabletDriver_2015-02-27-121617_[redacted]. crash

Feb 27, 2015, 12:08:32 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2015-02-27-120832_[redac ted].crash

Feb 26, 2015, 08:19:12 AM /Library/Logs/DiagnosticReports/WacomTabletDriver_2015-02-26-081912_[redacted]. crash

Feb 27, 2015, 12:46:20 PM Self test - passed

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Answer 4

MichelPM

Level 10

80,958 points

Feb 27, 2015 7:08 AM in response to Ankkatonkka

I do not see anything really out of the ordinary that stands out in the report.

I am incline to believe as Linc Davis does that your Mac still has some sort of hardware fault and you need to bring it in to an Apple Store, again, for a complete diagnostic for possible reason of computer failure.

Sorry.

The report is not showing anything that would be considered abnormal.

You need to bring your Mac back in to Apple.

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