System hangs during shutdown, blue screen with gear spinning.

My MBP gets stuck during shutdown/restart process.
The system acts like it is shutting down, exits the the desktop, goes to a blue screen with a spining gear then never turns off. It seems the screen falls aslep if you leave it awhile but the system itself won't actually shutdown. If you move the mouse the screen lights back up. but still shos the "death gear"! happens on both shutdowns or restarts. System must be turned off by holding the power switch for 10 secs.
Please help!
Chris

Seems like a odd thing. If youve downloaded torrents of hacked programs or things like that may have been the cause by the uploader hacking and doinng this. I would bring the Macbook Pro to the apple store and see what they can do. If they cant do anything about it I would backup all the important programs and get rid of anything that seems suspicious. Then upload the stuff back onto the computer after you restore it. Thats the best solution.

Similar Messages

Hi guys I'm really in need of some help. I have an IMac I3 for a while now I've been having a problem of my machine refusing it shut down , it goes to a blue screen with a spinning wheel but doesn't shut down. And now won't boot from install DvD

Please some one help me ...
A) my mac won't shut down with external HD connected (if it's been used)
B) there are disk permissions that can't be fixed SUID stuff ..
C) I have now verified the Mac HD and it tells me it's corrupt in bold red writing and to start up from install DVD
D) it won't boot from DVD so I cannot run the repair , initially the machine was spitting it out on start up , now it appears to be attempting to boot off DVD , well it sounds like it is .... BUT it's hanging with the Mac Logo and a wheel ... For um .... 30min now...
E) weirdly when OSX is booted off the hard drive , it won't recognise the Install DvD or the applications one... It just spits them out....
I had an old PPC 17" and it was a beaut .... Never had a single problem with it ...
I bought this one December 2010 and it's been nothing but issues for a computer in excess of £1000 I'm extremely disappointed ... And weirdly the shutting down issue started when it was a week out of warrantee ... I feel conned and am almost at the point of throwing it at a wall and buying a PC

Ok so I've done what you said and this is what it's come back ....
I don't know that these are the errors , but they're the things which don't look right ...
Throughout the shut down there is a recurring line ;
It says ;
Com.apple.launchd 1 0x100600e70.anonymous.unmount 301 PID still valid
Then there are 2 more which I think are related ;
Com.apple.securityd 29 PID job has I overstayed its welcome , forcing removal.
Then the same with fseventd 48 and diskarbitrationd 13
Oh and on Launchd1 : System : stray anonymous job at shut down : PID 301 PPID13 PGID 13 unmount...
Then the last process says "about to call: reboot (RB_AUTOBOOT).
Continuing...
And stops ...
Hope this means something to you ... Thanks again for your help so far :-)

Start Up problems, I'm past the grey screen now at blue screen with spinning gears.

Hello I'm working on my Mothers I Mac I believe its a G5,, I do see IMAC 8.1. Today when she turned it on all that came up is a gray screen with a spinning gear. I tried Disk Utility but the HD wasn't being recognized. After a few more trial and errors I finally reset the SMU, Which when I ran disk utility again the hard drive was recognized. I verified it and it said HD seems to be ok. I restarted and sure enough I made it past the gray screen but now Its stuck on a blue screen with a spinning gear. It looks almost like the login screen is trying to load but never comes up. Every 10-20 sec it flickers and the gear just keeps spinning. The fan was never coming on, not until I reset the SMU so I'm currently letting it cool down. Hoping this helps. Should I run the disk utility again and click the repair hd, even though no errors were listed when I verified it.

An iMac 8,1 is an Intel model. Are you sure it's a G5 (not an Intel model?)
Perhaps you should try reinstalling OS X:
How to Perform an Archive and Install
An Archive and Install will NOT erase your hard drive, but you must have sufficient free space for a second OS X installation which could be from 3-9 GBs depending upon the version of OS X and selected installation options. The free space requirement is over and above normal free space requirements which should be at least 6-10 GBs. Read all the linked references carefully before proceeding.
1. Be sure to use Disk Utility first to repair the disk before performing the Archive and Install.
Repairing the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Do not proceed with an Archive and Install if DU reports errors it cannot fix. In that case use Disk Warrior and/or TechTool Pro to repair the hard drive. If neither can repair the drive, then you will have to erase the drive and reinstall from scratch.
3. Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When you reach the screen to select a destination drive click once on the destination drive then click on the Option button. Select the Archive and Install option. You have an option to preserve users and network preferences. Only select this option if you are sure you have no corrupted files in your user accounts. Otherwise leave this option unchecked. Click on the OK button and continue with the OS X Installation.
4. Upon completion of the Archive and Install you will have a Previous System Folder in the root directory. You should retain the PSF until you are sure you do not need to manually transfer any items from the PSF to your newly installed system.
5. After moving any items you want to keep from the PSF you should delete it. You can back it up if you prefer, but you must delete it from the hard drive.
6. You can now download a Combo Updater directly from Apple's download site to update your new system to the desired version as well as install any security or other updates. You can also do this using Software Update.

MBP stuck on blue screen with spinning loading icon during update to 10.6.7

I have a mid-2010 model Macbook Pro 13inch, 2.4ghz/4gb ram
I've been scouring apple forums and even reddit and my googlefu has yielded no such luck. Basically, System Update has been yelling at me for a few weeks now to upgrade to 10.6.7 (among other updates) and I've been putting it off and putting it off, with the intention of eventually doing the update, but I just kept forgetting.
Finally tonight, I remembered, and decided to open System Update, and do all the recommended updates that it was asking me to do. So, without thinking twice (I've never had an issue with this before) I clicked download and install, and away it went, downloading like usual and then rebooting.
Thing is, it's been stuck at this blue screen with the spinning spiral coming up on 5 hours now. I know the 10.6.7 update was close to 400mb, but I've never had anything like this happen before.
My hard drive had more than 150 gigs free on it last time I checked, and it's been running absolutely flawless up until now.
Has anyone else experienced this? Is it supposed to take so long? What do I do?
I've been contemplating shutting it down by holding the power button, but since it's a OS update I'm afraid the drive will be corrupted, and unfortunately I don't have a current backup of the drive either... Help

I left my macbook plugged in over night, we're now going on 14 hours of this blue screen with the spinning wheel/symbol. Anyone?

My MBP 15 inch can't switch off (freeze at blue screen with spinning wheel)

Whenever i try to "shut down" my MBP, it will freeze at the blue screen with the spinning wheel (that keeps spinning like 'eternally')! Any idea how to solve the problem?
I tried booting from the installation disk and repairing disk with "disk utility" but to no avail. Have also tried repairing disk permissions... Any idea how else should i tackle this problem?
Currently i can only switch off my MBP by holding the power button (forcing it to shut down)...
Please help Thanks!

Launch the Console application by entering the first few letters of its name into a Spotlight search, and select "system.log" from the file list. Enter "BOOT_TIME" (without the quotes) in the search box. Note the times of the log messages referring to boot times. Now clear the search box and scroll back in the log to the time of the most recent boot when you had the problem. Look for error messages in the minutes before that time, and post them here -- the text, please, not a screenshot. Edit out excessive repeats, if any. Do the same with kernel.log.
If the logs don't go back far enough in time, scroll down in the Console file list to /private/var/log/system.log.0.bz2 and /private/var/log/kernel.log.0.bz2. Search those archived logs, and if necessary the older ones below them, for the same information.
Also in Console, look under System Diagnostic Reports for crash or panic logs, and post the most recent one, if any. For privacy’s sake, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please do not post shutdownStall or hang logs -- they're very long and not helpful.

(10.6.5) Macbook stuck at reboot/logout/shutdown blue screen

Hi there,
I've been googling this for a long time and haven't found anything that solved the issue so here it goes:
Sometimes, when trying to logout, shutting down or rebooting the system, finder shuts down and a blue screen with a spinning wheel appears where it will stay until I manually hold the power button.
I'm using an external USB audio interface (M-audio fast track ultra 8r) and a USB apple keyboard with a logitech mouse connected to it.
I have already tried booting in safe mode, resetting nvram/pram and even praying to the holy spirit.
I'm open to any suggestions

Problem solved. I was getting a light blue screen and spinning progress wheel on shutdown about 40% of the time. I thought it was due to the number of applications open or the length of time before shutting down. I called Apple Support today and the rep (who was very good) who walked me through 3 steps.
1) SMC reset
2) PRAM reset
3) Disk Utility -> Disk Verify -> Disk Repair
Problem that was causing shutdown errors was caused by a partially corrupted disk drive. Remember that the Macbook Air runs a Solid State Drive. Using the Disk Utility, we ran the Drive Repair feature and it found that my drive was partially corrupted and repaired it. Now that the drive has been "repaired", the shutdown issue has gone away.
I was afraid that I was going to have to reinstall MAC OS....but it was a quick "repair" command and the drive was repaired successfully. Problem solved.

Very long blue screen with spinning sprocket at shut down

When I shut down my Mac Mini, after everything closes properly I get a blue screen with a spinning sprocket for a very long time. I end up having to power down and restart. It happens most of the time, interupted with an occasional proper shut down.
Any ideas on what this means?
Thanks for your time.
Kevin

Check Console in Utilities for messages from around the time of the shutdown. Check system.log expecially, but look around at some of the other logs as well. Also, try booting in Verbose Mode, CMD-V at startup. This will scroll text of the bootup sequence before it goes to the regular screen, but the next time you shutdown, it might scroll text of the shutdown sequence and give a clue as to what's going on there. Be ready with a camera or notepad to write down what you see.

Blue Screen with spinning coloured wheel

My girlfriend borrowed her iMac G4 Flat Panel to a friend and now it won't load the OS properly.
The following happens:
1. The grey screen appears (with the smiling MAC in the middle)
2. The Mac OS X start-up screen appears with the progress bar
3. Then a blue screen, with a spinning coloured wheel in the top left corner
4. After a couple of minutes, a few windows pop open (probably whatever the person accessed last)
5. The windows disappear and all you're left with is a blue screen and spinning coloured wheel in the top left corner
6. The MAC then remains in this state indefinitely
Unfortunately, I’m unable to tell what version of the MAC OS is running.
We cannot find the OS disk either.
I will greatly appreciate any assistance anybody is able to provide.
Thanks

Brannas...
Empty,Blue Screen.
http://docs.info.apple.com/article.html?artnum=106464
1. Start up in Safe Mode.(shift key at startup)
a. Drag the Fonts folder from the Mac OS 9 System Folder (not the Mac OS X System folder) to the desktop.
b. Drag the Fonts folder from ~/Library/Fonts to the desktop.
b. Restart the computer in Mac OS X.
c. If this solves the problem....you have a corrupt font in one of the above font folders
2. Remove incompatible third-party startup items.
a. Start up in Safe Mode.(shift at startup)
b. Open the Mac OS X hard disk.
c. Drag third-party items out of ....
/Library/StartupItems .......
/System/Library/StartupItems ...
Place them on the desktop .... If you're unsure whether an item is a third-party item or an Apple-installed item, don't move it.
d.Restart the computer.
Note.. If this resolves the issue, add the Startup Items one at a time until the symptom occurs again. That way you'll know which one is incompatible. Repeat these steps and remove the incompatible item.
3. If your computer still starts up to a blue screen, follow these steps.
a. Start up using cpmmand+S....(Single-User Mode).
b. Type: mount -uw /
c. Press Return.
d. Type:
mv /Library/Preferences/com.apple.loginwindow.plist preferences2.old
Tip: There is a space between ".plist" and "preferences".
e. Press Return.
f. Type:
mv /Library/Preferences/com.apple.windowserver.plist preferences3.old
g. Press Return.
h. Type: reboot
i. Press Return.
4. Reset certain privileges.
a. Start up the computer in Single-User Mode.
b. Check the volume with fsck.
c. Type: mount -uw /
d. Press Return.
e. Type: chmod 1775 /
f . Press Return.
g. Type: reboot
h. Press Return.
george

When turning on my imac, it loads to a blue screen with a turning wheel and never gets passed that. I have tried booting to safe mode and it still doens't work.

When turning on my imac, it loads to a blue screen with a spinning wheel. It never gets passed that screen. I have tried power up to safe mode and it still doesn't work. I have music files saved on the computer and I don't want to lose any of my files. Can someone help me?

Zap the PRAM and Reset the SMC, and see if that fixes it. BTW. detailed computer and OS info goes a long way to solving problems.

Grey and Blue Screens with Spinning Pinwheel

Mid 2009 Macbook Pro 13 inch with Mac OSX Snow Leopard installed. 2.26 GHZ 4 GB 160 GB Version 10.6.3
I got this dead Macbppk Pro from my daughter . I put in a new battery and re-installed Mac OSX Snow Leopard from the licesned disc she bought so I could get rid of all her files and have free space and to make the Macbook now mine with my passwords etc. I got free support from Apple on how to install the disc and overwrite everything that was on it.
Until now ... I get a Grey Screen with the Spinning Pinwheel for endless time.
So the I tired the Hold Alt/ Option + Command + holding the P and R buttons while starting it up and got a Blue Screen with the spinning Pinwheel.
Any Help on what to try next ?
I only use it about once a month because I have a desktop. Does using it only once a month harm anything ? Should I be doing anything to not have this problem with it ?
Or do I have to re-install the disc again and if so .... what would be the procedure to do so ( I forget )
Thanks Eric

Hi Eric,
Thanks for visiting Apple Support Communities.
If your MacBook Pro is only starting up to a blue screen with spinning pinwheel, reinstalling OS X may be necessary. I would recommend going through all of these steps first:
Restart the computer in safe mode. If the computer successfully starts up in safe mode, choose Apple menu > Restart to see whether the computer will restart normally.
Starting up in safe mode
If you see the login window prompting you for a user name and password, but starting up doesn't progress, you may have incompatible login items.
Eliminating incompatible login items
Repair your startup disk or disk permissions by starting up from your Mac OS X installation disc and using Disk Utility.
Repairing a disk
Back up your disk and then reinstall Mac OS X by starting up your computer with your Mac OS X installation disc.
Reinstalling Mac OS X
From:
Mac OS X 10.6: If you see a blue screen at startup
Best Regards,
Jeremy

Mac mini updated now just get blue screen and a spinning wheel

Mac Mini ppc with tiger.
Updated today (safari, OSX and itunes) after freeing up some space by copying files off to a USB drive. After reboot it gets to a blue screen with a spinning "wheel" and stays there for hours, never gets any further. Will boot to command prompt, target disk mode and a set of DVDs borrowed from work (which won't install as they are for iMac!) but not to anything GUI from the hard disk as far as I can tell atm. Disk utility on the DVDs reports no errors on the internal disk.
All was well before the updates. There was one "funny" but I'm not sure if its relevant. During use today the desktop appeared to get bigger than the screen when changing the screen saver to a snow flake one I used last Christmas (with no problems). As the mouse moves around the screen the screen scrolls in the opposite direction (only about 5 pixels) as used to happen in the old days on my PC when the graphics cards supported higher resolutions than the screen did.
Of course, as luck would have it, I can't find my original tiger disks!
Help!

Safe mode likely won't help, but it is achieved by holding the Shift key down during reboot - press and hold down when you hear the chime. It takes a while longer to boot into safe mode than booting normally, and it loads only core MacOS modules.
One issue that was a perpetual risk with installing updates in versions of MacOS X prior to Leopard was the possibility of disrupting prebinding. Prebinding is the process whereby library files are linked to executables, and problems can occur is applications are running (and in active use) during the installation of updates. If prebinding is disrupted, the system can fail to boot after an update, and the blue screen is a common symptom.
IF prebinding is a problem and you can't boot into safe mode, boot into single user mode (hold Ctrl-S during boot from hearing the chime) and then at the prompt, type 'sudo update_prebinding' (no quotes of course) and hit enter. Enter your admin password when requested, and sit back and wait for the command prompt to reappear, at which point the prebinding update is complete - it could take several minutes.
If that doesn't help, your initial post implies you do not have your original install disks - you may however need them, or a retail MacOS installer, because it may be necessary to perform an archive and install on the hard drive.

I have an iMac from 2008. When I start I get gray screen with apple and turning gear. Next blue screen. Then light blue screen with turning gear. Back to blue screen. Now just back and forth blue to light blur

I have an iMac from 2008. When I start I get gray screen with apple and turning gear. Next blue screen. Then light blue screen with turning gear. Back to blue screen. Now just back and forth blue to light blur

Reinstall OS X:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.
Reinstalling Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

Blue screen with the following error SYSTEM SERVICE EXCEPTION (ACPL.sys)

Hi,
I had a blue screen with SYSTEM SERVICE EXCEPTION (ACPL.sys) error message yesterday.
It happened right after the graphic card update was completed. I have an HP Spectre XT laptop with Windows 8 and Intel(R) HD Graphics 4000.
After restart, I noticed that the available free space on my hard disk dropped by 4 GB!
Can you please assist?
Thank you.

We do need the actual DMP file as it contains the only record of the sequence of events leading up to the crash, what drivers were loaded, and what was responsible.
WE NEED AT LEAST TWO DMP FILES TO SPOT TRENDS AND CONFIRM THE DIAGNOSIS.
You may be able to get the DMP files without crashing by booting into safe mode (F8) with networking.
If you are overclocking stop. (chances are if you dont know if you are, you are not)a
To enable us to assist you with your computer's BSOD symptoms, upload the contents of your "\Windows\Minidump" folder. We need at least 2 DMP FILES to diagnose and confirm
The procedure:
* Copy the contents of \Windows\Minidump to another (temporary) location somewhere on your machine.
* Zip up the copy.
* Attach the ZIP archive to your post using the "paperclip" (file attachments) button. (if available on your site, MS doesnt have this)
*Please upload them to a file sharing service like Skydrive or"Rapidshare" and put a link to them in your reply.
Link for how to upload below.
http://www.wikihow.com/Use-SkyDrive
To ensure minidumps are enabled:
* Go to Start, in the Search Box type: sysdm.cpl, press Enter.
* Under the Advanced tab, click on the Startup and Recovery Settings... button.
* Ensure that Automatically restart is unchecked.
* Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box (the 256kb varies).
* Ensure that the Small Dump Directory is listed as %systemroot%\Minidump.
* OK your way out.
* Reboot if changes have been made.
Please also run MSinfo32 and upload the output as well.
To run MSinfo32 please go to start>run>MSinfo32
Go to "file" "save" and upload the saved file with the DMPS
System specs are extremely useful so please include whatever you know.
Blue Screen View & Who Crashed are often wrong and should only be used in an emergency
Team Zigzag3143.com
Wanikiya & Dyami--Team Zigzag

Blue screen with rotating gear

I have installed a new hard drive in a mac mini PPC. When I try to install OS X from the original disk, I get as far as the language selection screen and then it goes to a blue screen with a rotating gear. I have left it there for an hour and nothing changes. I did make sure to format the drive before I tried to install. I don't know what to try but I am very stuck at this point.

Matthew:
Check your formatting against these directions:
Formatting, Partitioning Erasing a Hard Disk Drive
• With computer shut down insert install disk in optical drive.
• Hit Power button and immediately after chime hold down the "C" key.
• Select language
• Go to the Utilities menu (Tiger) Installer menu (Panther & earlier) and launch Disk Utility.
• Select your HDD (manufacturer ID) in left side bar.
• Select Partition tab in main panel. (You are about to create a single partition volume.)
• Select number of partition in pull-down menu above Volume diagram.
(Note 1: One partition is normally preferable for an internal HDD.)
• Type in name in Name field (usually Macintosh HD)
• Select Volume Format as Mac OS Extended (Journaled)
• Click Partition button at bottom of panel.
• Select Erase tab
• Select the sub-volume (indented) under Manufacturer ID (usually Macintosh HD).
• Check to be sure your Volume Name and Volume Format are correct.
• Click Erase button
• Quit Disk Utility.
Open installer and begin installation process.
cornelius

Macbook Pro 10.6.8 won't shut down. Blue screen with spinning wheel.

it's an 15 inch macbook pro. since I bought this computer was working fine about last year. Somehow, start of this year, the problem begins. Everytime when i opened microsoft word 2011 on mac or Photoshop cs5, and quit the software as normaly. When i try to shut down the blue screen with spinning wheel apears. this spining wheel is endless. But funny thing is that after use other software such as games, web browser (safari) etc. and quit them. when i shut down there was not a problem. only word 2011 for mac and adobe photoshop cs5. Any solutions?

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.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Console in the page that opens.
Step 1
Select "system.log" from the file list. Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Post the messages logged during the time something abnormal was happening. That time might be before or after the boot.
For example, if the problem is a slow startup taking three minutes, post the messages timestamped within three minutes after the boot time, not before. If the problem is a system crash or freeze, post the messages from before the boot time, when the system was about to crash or was failing to shut down. In either case, please include the BOOT_TIME message at the beginning or the end of the log extract.
Post the log text, please, not a screenshot. If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
If the log doesn't go back far enough in time, scroll down in the Console file list to /private/var/log/system.log.0.bz2. Search that archived log, and if necessary the older ones below it, for the same information.
Important: Some private information, such as your name, may appear in the log. Edit it out by search-and-replace in a text editor before posting.
Step 2
Do the same with kernel.log.
Step 3
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall or hang logs — they're very long and not helpful.

System hangs during shutdown, blue screen with gear spinning.

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