Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.


Question: iMac keeps restarting immediately after shut-down from menu and forced shut-down using power button

iMac keeps restarting immediately after shut-down either from menu or forced shut-down using power button. Any suggestions? Thanks!

iMac, iOS 11.1

Posted on

Question marked as Apple Recommended

Sounds like you need to reset the SMC, as per > How to reset the System Management Controller (SMC) on your Mac - Apple Support

Posted on

Page content loaded

Nov 17, 2017 9:22 AM in response to den.thed In response to den.thed

Thanks for your tip. I followed the instructions provided by Apple which was to unplug the power cord for 15 seconds in order to reset the SNC. Unfortunately, this didn't work and my iMac continues to restart every time I shut it down. I have also tried holding down the Shift key during start-up as this was also suggested. No luck with that either. Any other techniques to try or should I jjust contact Apple Support? Thanks again!

Nov 17, 2017 9:22 AM

Reply Helpful

Nov 17, 2017 10:13 AM in response to ChronicTronic In response to ChronicTronic

What OS version are you running? ("iOS 11.1" as shown in your equipment profile runs only on Apple's mobile devices, not on their computers).

Is anything blocking air intake and exhaust vents?

Do any of the following apply:

1) Are you running any anti-virus/internet security applications?

2) Are you running any "cleaning/tune-up/optimization" applications?

3) Any peer-to-peer or torrent downloading software?

4) Any third-party disk backup software that came bundled with an external hard drive?

5) Any online backup scheme other than iCloud or DropBox (Carbonite; GoogleDrive; MS One Drive)?

6) Did your financial institution ask you to install Trusteer EndPoint Protection (also known as Trusteer Rapport)?

Nov 17, 2017 10:13 AM

Reply Helpful

Nov 18, 2017 2:08 PM in response to den.thed In response to den.thed

EtreCheck version: 3.4.6 (460)

Report generated 2017-11-18 13:34:28

Download EtreCheck from https://etrecheck.com

Runtime: 7:39

Performance: Below Average

Click the [Lookup] links for more information from Apple Support Communities.

Click the [Details] links for more information about that line.

Click the [Clean up] link to delete unused files.

Problem: Computer is restarting


Computer is restarting by itself after shut-down. This includes it restarting after forced shut-down by holding power button in as well as unplugging the computer or 15 seconds. Computer is also running very slow.

Hardware Information:

iMac (27-inch, Mid 2010)

[Technical Specifications] - [User Guide] - [Warranty & Service]

iMac - model: iMac11,3

1 2.93 GHz Intel Core i7 (i7) CPU: 4-core

4 GB RAM Upgradeable - [Instructions]


2 GB DDR3 1333 MHz ok


2 GB DDR3 1333 MHz ok





Handoff/Airdrop2: not supported

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

Video Information:

ATI Radeon HD 5750 - VRAM: 1024 MB

iMac 2560 x 1440

Disk Information:

ST31000528AS disk0: (1 TB) (Rotational)

[Show SMART report]

(disk0s1) <not mounted> [EFI]: 210 MB

Macintosh HD (disk0s2 - Journaled HFS+) / [Startup]: 999.35 GB (57.38 GB free)

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


USB Information:



Tablet GD-0912-U

EPSON USB2.0 Printer (Hi-speed)

Apple Card Reader

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller



USB2.0 Hub

Microsoft Natural® Ergonomic Keyboard 4000

Apple Computer, Inc. IR Receiver

Apple Inc. Built-in iSight

Firewire Information:

LaCie d2 Quadra v3C 800mbit - 800mbit max

(disk2s1) <not mounted> [EFI]: 210 MB

LaCie (disk2s2 - Journaled HFS+) /Volumes/LaCie : 3.00 TB (913.80 GB free)

LaCie d2 quadra (button) 800mbit - 800mbit max

[redacted] External (disk1s1 - Journaled HFS+) /Volumes/MacMallin External : 1.00 TB (4.68 GB free)

System Software:

OS X El Capitan 10.11.6 (15G17023) - Time since boot: less than an hour


Mac App Store and identified developers

Clean up:

~/Library/LaunchAgents/com.apple.CSConfigDotMacCert-[redacted]@me.com-SharedSer vices.Agent.plist

/System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewo rk/Versions/A/Support/CSConfigDotMacCert -l ~/Library/Logs/CSConfigDotMacCert.log -u [redacted]@me.com -t SharedServices -s

Executable not found!


/System/Library/PrivateFrameworks/DotMacSyncManager.framework/Resources/mobilem esyncclient --sync --periodic

Executable not found!

2 orphan files found. [Clean up]

Kernel Extensions:


[not loaded] com.LaCie.ScsiType00 (1.2.13 - SDK 10.5) [Lookup]

[not loaded] com.microsoft.driver.MicrosoftKeyboard (7.1) [Lookup]

[not loaded] com.microsoft.driver.MicrosoftMouse (7.1) [Lookup]

[not loaded] com.wacom.kext.wacomtablet (Wacom Tablet 6.1.5-2) [Lookup]


[not loaded] com.microsoft.driver.MicrosoftKeyboardBluetooth (7.1) [Lookup]

[not loaded] com.microsoft.driver.MicrosoftKeyboardUSB (7.1) [Lookup]


[not loaded] com.microsoft.driver.MicrosoftMouseBluetooth (7.1) [Lookup]

[not loaded] com.microsoft.driver.MicrosoftMouseUSB (7.1) [Lookup]

Startup Items:

ProTec6: Path: /Library/StartupItems/ProTec6

ProTec6b: Path: /Library/StartupItems/ProTec6b

Startup items no longer function in OS X Yosemite or later

System Launch Agents:

[not loaded] 9 Apple tasks

[loaded] 166 Apple tasks

[running] 49 Apple tasks

[killed] 16 Apple tasks

16 processes killed due to insufficient RAM

System Launch Daemons:

[not loaded] 46 Apple tasks

[loaded] 160 Apple tasks

[running] 65 Apple tasks

[killed] 21 Apple tasks

21 processes killed due to insufficient RAM

Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-11-18) [Lookup]

[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist (Adobe Systems, Inc. - installed 2017-11-13) [Lookup]

[running] com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2017-11-18) [Lookup]

[loaded] com.adobe.CS5ServiceManager.plist (? 40cdc1ff 21868ea0 - installed 2011-12-26) [Lookup]

[running] com.epson.epw.agent.plist (? 7c4cf380 5b21e787 - installed 2010-08-11) [Lookup]

[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2017-09-27) [Lookup]

[running] com.sony.WirelessAutoImportLauncher.agent.plist (? c33fba7e 9d56eb15 - installed 2015-09-23) [Lookup]

[running] com.wacom.wacomtablet.plist (? 9e9edb5e 7db17fcd - installed 2010-02-25) [Lookup]

Launch Daemons:

[loaded] com.adobe.ARMDC.Communicator.plist (Adobe Systems, Inc. - installed 2017-11-13) [Lookup]

[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (Adobe Systems, Inc. - installed 2017-11-13) [Lookup]

[loaded] com.adobe.SwitchBoard.plist (? 68cad67 0 - installed 2010-08-04) [Lookup]

[loaded] com.adobe.acc.installer.plist (Adobe Systems, Inc. - installed 2017-11-13) [Lookup]

[running] com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2017-11-05) [Lookup]

[loaded] com.adobe.fpsaud.plist (? 2afb3af7 defea098 - installed 2017-10-25) [Lookup]

[loaded] com.apple.installer.osmessagetracing.plist (Apple, Inc. - installed 2017-10-25)

[loaded] com.google.keystone.daemon.plist (Google, Inc. - installed 2017-11-05) [Lookup]

[loaded] com.microsoft.office.licensing.helper.plist (? 6d8cb30e afb3bef0 - installed 2010-08-25) [Lookup]

User Launch Agents:

[loaded] com.adobe.ARM.[...].plist (? e18d8339 63c5d68b - installed 2013-05-18) [Lookup]

[failed] com.apple.CSConfigDotMacCert-[redacted]@me.com-SharedServices.Agent.plist (? ? ? - installed 2010-08-03) - /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewo rk/Versions/A/Support/CSConfigDotMacCert: Executable not found!

[loaded] com.apple.MobileMeSyncClientAgent.plist (? ? ? - installed 2010-08-07) - /System/Library/PrivateFrameworks/DotMacSyncManager.framework/Resources/mobilem esyncclient: Executable not found!

[loaded] com.apple.SafariBookmarksSyncer.plist (? ? ? - installed 2010-08-04)

[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-11-05) [Lookup]

User Login Items:

MicrosoftKeyboardHelper Application

(/Library/PreferencePanes/Microsoft Keyboard.prefPane/Contents/Resources/MicrosoftKeyboardHelper.app)

MicrosoftMouseHelper Application

(/Library/PreferencePanes/Microsoft Mouse.prefPane/Contents/Resources/MicrosoftMouseHelper.app)

Dropbox Application


Internet Plug-ins:

PMCADownloader: 1.2.1998.896 (installed 2015-12-03) [Lookup]

WacomNetscape: 1.1.0-5 (installed 2010-02-25) [Lookup]

Default Browser: 601 (installed 2016-08-13)

Flip4Mac WMV Plugin: (installed 2012-02-11) [Lookup]

WacomSafari: 1.1.0-5 (installed 2010-02-25) [Lookup]

AdobeAAMDetect: (installed 2017-11-18) [Lookup]

FlashPlayer-10.6: (installed 2017-11-18) [Lookup]

AdobePDFViewerNPAPI: 17.012.20098 (installed 2017-08-24) [Lookup]

Silverlight: 4.0.60831.0 (installed 2012-02-11) [Lookup]

QuickTime Plugin: 7.7.3 (installed 2017-11-05)

Flash Player: (installed 2017-11-18) [Lookup]

iPhotoPhotocast: 7.0 (installed 2013-05-12)

SharePointBrowserPlugin: 14.7.7 (installed 2017-11-18) [Lookup]

AdobePDFViewer: 17.012.20098 (installed 2017-08-24) [Lookup]

JavaAppletPlugin: 15.0.1 (installed 2014-02-22) Check version

3rd Party Preference Panes:

Flash Player (installed 2017-10-25) [Lookup]

Flip4Mac WMV (installed 2011-11-22) [Lookup]

Growl (installed 2010-08-04) [Lookup]

Microsoft Keyboard (installed 2010-08-14) [Lookup]

Microsoft Mouse (installed 2010-08-14) [Lookup]

Time Machine:

Mobile backups: OFF

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 999.35 GB Disk used: 941.97 GB


LaCie [Local]

Total size: 3.00 TB

Total number of backups: 70

Oldest backup: 5/25/14, 12:04 AM

Last backup: 11/18/17, 12:40 PM

Size of backup disk: Excellent

Backup size 3.00 TB > (Disk size 999.35 GB X 3)

Top Processes by CPU:

11% AdobeGCClient

9% kernel_task

5% WindowServer

5% Finder

2% mdfind

Top Processes by Memory:

499 MB kernel_task

88 MB Safari

81 MB Adobe CEF Helper

81 MB Dropbox

64 MB node

Top Processes by Energy Use:

17.58 AdobeGCClient

12.50 soagent

6.74 WindowServer

6.08 Finder

Virtual Memory Information:

1.14 GB Available RAM

94 MB Free RAM

2.86 GB Used RAM

1.05 GB Cached files

0 B Swap Used

Software installs (last 30 days):

Google Earth: (installed 2017-11-05)

Adobe Flash Player: (installed 2017-11-05)

Adobe Acrobat DC (Continuous): (installed 2017-11-13)

Adobe Flash Player: (installed 2017-11-18)

Office 2011 14.7.7 Update: (installed 2017-11-18)

Install information may not be complete.

Diagnostics Events (last 3 days for minor events):

2017-11-18 11:30:48 Creative Cloud.app Crash [Open]

Cause: abort() called

*** error for object 0x7feb29d9ffd0: pointer being freed was not allocated

Nov 18, 2017 2:08 PM

Reply Helpful

Nov 20, 2017 5:43 PM in response to ChronicTronic In response to ChronicTronic

For starters I see:

1. Your Hard Drive is getting full. Not dangerously full at this point, but it is working on the slowest part of the Platters.

2. You only have 4GB of RAM, hardly enough to run macOS let alone other App's.

3. You have a lot of internet plug-in

What I would do:

1. Make a little more space. 10% or 100GB would be a better place to be.

2. Install at least 2x2 4GB or 2x4 8GB of RAM in the two empty slots.

3. Loose some or all of the internet plug-in.

Then post back with another report.

Nov 20, 2017 5:43 PM

Reply Helpful

Nov 21, 2017 4:53 PM in response to den.thed In response to den.thed

Thank you for the suggestions. I have been moving files off of the internal drive to an external one and then deleting them. Will continue to do so to free up more space as you've suggested.

Can you define what internet plug-ins are? Im not aware of any that I've downloaded. Can I find them in a particular location?

Nov 21, 2017 4:53 PM

Reply Helpful
User profile for user: ChronicTronic

Question: iMac keeps restarting immediately after shut-down from menu and forced shut-down using power button