After installing update, iMac won't start up

After installing the last updates my iMac won't start up, starts what look like install then just shuts down.

Would you care to tell us what exact model and version of iMac and what version of OS X you are using?  We need a hint to help you.
Hope this helps .

Similar Messages

  • After Firmware update iMac won't start up

    Hi I have this problem with my iMac G5
    I try the explanation about downgrade to 10.4.9 But when I go to the Disk Utility and perform verify disk the answer is "
    Verify and Repair Disk "Macintosh HD"
    Checking HFS Plus Volume.
    Checking Extents Overflow file.
    Checking Catalog File.
    Keys out of order (in bold red)
    Rebuilding Catalog B-tree. (in bold green)
    The volume Macintosh HD could not be repaired.
    Error: the underlying task reported failure on exit
    ( in bold red)
    1 HFS volume checked
    1 volume could not be repaired because of an error. (in red)
    Repair attempted on 1 volume
    1 volume could not be repaired (in red)
    Then comes a window saying that the first aid failed!
    Now what can I do.
    And if some could tell me how do I backup using firewire cables to another mac.
    Thank's

    First, the back up with firewire is Target Disk Mode. If the other computer can see yours, you should be able to drag your data over.
    As far as your problem is concerned, did you try the repair from your install disc? If not, start up from your install disc holding down the C key, then go to Disk Utility and then Verify and repair hard drive.
    Let us know how you make out,
    Miriam
    Miriam

  • Satellite L - After BIOS update it won't start up again

    I just got an email saying there was a BIOS update for my laptop. It started to install but my computer shut down and won't start back up
    PLEASE HELP!!!!!!!
    The update was: ACPI Flash BIOS version 1.90 for Sat/Sat Pro L355D/L305D (PSLE0U, PSLC0/1U)

    Hello
    And what Satellite notebook you have exactly? Is your notebook designed for this update or is it another model?
    After a failed BIOS update you can try this workaround: Remove the AC/DC adaptor and battery then wait one hour. After this connect the AC/DC adaptor and battery again. Now try to start the notebook again.
    If the notebook doesnt start you need help from a notebook technician. Therefore contact the nearest authorized service provider. They can help and will try to reflash the ROM module I think or the mainboard must be exchanged.
    Greets

  • After installing updates, Firefox won't work. I got the message /Applications/Firefox.app/Contents/MacOS/firefox-bin -ProfileManager Error: Platform version '1.9.2.4' is not compatible with minVersion = 1.9.2.6 maxVersion /Applications/Firefox.app/Conten

    I cannot access download.mozilla.org. I need to do a fresh install after something went wrong with my updates and now Firefox won't even open so I am using Safari. I don't know why I can't get download.mozilla.org: is it because I am in China and it's now been blocked or is there a problem with the website?
    == I downloaded the updates. ==
    == User Agent ==
    Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16

    Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.<br />
    Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.<br />
    It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
    You can skip the step to create a new profile, that is not necessary for this issue.
    See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

  • After installed, iTunes 10 won't start, error message appears

    Hi all,
    Could anyone help me solve my problem.
    I try to install itunes 10 on my windows vista SP1. After installation, while the application is about to start, there is a message 'the file ituneslibrary.itl cannot be read because it was created by a newer version of itunes'.
    Thank you for the solution guys.
    Regard

    Welcome to AD!
    Try these directions:
    http://support.apple.com/kb/TS1967
    The title of the article does not match what you are seeing, but it has worked for others.
    Skip step #2, of course.
    In step #7, instead of dragging the file over, I would copy & paste it. That will leave the original in the same spot in case you ever need it again.

  • After last update computer won't start

    on febuary 20th I downloaded the newest system updates for leopard, after getting them downloaded I restarted my computer and haven't got it up and running since.
    after restarting the first time it went to the grey apple logo screen with the progress circle at the bottom and ticked away for a few hours, then it flashed over to a blue screen. Since that time every time I've tried starting my computer it has had the same problem.
    I can't boot into safemode, I get no warnings, just a grey screen that eventually goes to a blue screen, in the blue screen I get my mouse arrow that I can move but nothing else.
    I've talked to some of the IT guys where I work, but have had no luck, and I've tried the reset the PRAM, and it still can't boot in any mode, and no other discussion seems to have a solution that I've found. Its now going on a month and I have work I need to get done and have had to resort to the use of my old ragidy peice of crap (PC) which is like trying to do brain surgery with a plastic spoon
    any and all help is appreciated
    thanks
    Joe Jones

    please do not duplicate posts. It gets very confusing.
    I responded to the other post which has been deleted.
    Message was edited by: nerowolfe

  • After Security Update it won't start

    'm freaking out here because I just downloaded the last two Security Updates and the Java QT update also . When I clicked on restart after the download I've got gray-screen with spinning thing for the last hour .
    Should I try to turn it off with the button ?
    --HELP
    Powerbook   Mac OS X (10.4.6)   tiger eMac

    It's not uncommon for the first start after an OS or security update to take an excessively long time, with following starts returning to normal speed. One hour does sound like a problem, through. If it's still stuck at the grey screen / while Apple logo / spinning gear after 90+ minutes, I'd reluctantly shut down with the power button, then try to Start Up in Safe Mode, allowing at least 20 to 30 minutes for the faceless disk repair operation that's part of Safe Boot to work.
    Disconnect all peripherals from the eMac other than the Apple USB keyboard and mouse before trying the shutdown / safe boot steps.
    When you get the Mac to restart, run Disk Utility> Repair Permissions on the hard drive as a check.

  • IMac won't start with Thunderbolt Display connected after firmware update

    After updating my thunderbolt display firmware to version 1.2 this morning via the App Store, my mid-2014 iMac won't start up with the external display connected.  I can get the iMac to start up only by disconnecting the display's thunderbolt connector. After the iMac comes up, I can reconnect the display and everything appears to function normally.  I've tried several restarts and the iMac won't start up with the display connected.  Anyone else experience this?

    Hello rameta,
    It may help to reset your Mac's SMC and PRAM.
    Intel-based Macs: Resetting the System Management Controller (SMC)
    http://support.apple.com/kb/HT3964
    Reset your computer’s PRAM
    http://support.apple.com/kb/HT1379
    Cheers,
    Allen

  • Macbook pro won't boot after installing update 10.9.3

    macbook pro won't boot after installing update 10.9.3

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode.
    Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
    The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    Test while in safe mode. Same problem?
    After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

  • Fire fox won't open after installing update. But it shows in my task manager as running

    Firefox won't open after installing update 3.6.6 Solution page says problem has been solved, but the solution has been removed.
    == This happened ==
    Every time Firefox opened
    == After installing update 3.6.6 ==
    == User Agent ==
    Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)

    Hello Chris.
    Hopefully this support article is what you need:
    https://support.mozilla.com/en-US/kb/Firefox+will+not+start

  • After having shut down after installing updates, when I restarted and tried to open a word file, it started opening ALL the word docs and the only way I could stop it was by"force quit"  arted  and tried to open

    After having shut down after installing updates, when I restarted and tried to open a word doc, it started opening ALL the word docs and the only way I could stop it was by"force quit"  . This is REALLY annoying!!

    May be it is the Resume feature.
    System Preference > General > Number of recent items
    Uncheck the box next to      "Restore windows when quitting and re-opening apps".
    Best.

  • IMac won't start without install disc

    Hi, I'm new to all of this. I tried resetting my admin password using install disc on my iMac as I'd forgotten it. Now iMac won't start without disc. If disc is ejected on restart apple logo flashes between no entry sign and folder with "?" on it. Will start up with install disc in, but then wants me to choose language and install OS. Tried repairing and verifying HD and all seems ok. Tried holding option key and selecting HD on startup, but same outcome - choose language and install OS. How do I get back to normal desk top? Do I have to install OS again? Will I lose data? Please, please help! Thanks.

    It should only take a minute or so at most to boot from the DVD.
    If your sure you have the correct Install Disk for that iMac, I'd start over. Then if it still doesn't work then perhaps a trip to your Local Apple Service Provider with the Disk or Disk and iMac is in order.
    http://www.apple.com/buy/locator/service/
    Alternately using the correct Disk as per the following article, see if you can run the Apple Hardware Test? > http://support.apple.com/kb/HT1509

  • Imac keeps restarting on its own after installing update X?

    Imac keeps restarting on its own after installing update X?

    What do you mean "update X"? What update are you referring to?

  • After last update imac (2011) does't start.

    After last update imac  (2011) does't start. I press power button behind and its start screen with apple logo and gray progress bar, when progress bar is full its just turn off iMac. I Press button behind again and its come the same, over and over.

    Startup - Gray, Blue or White screen at boot, w/spinner/progress bar
    Startup Issues - Resolve
    Startup Issues - Resolve (2)

  • IMac Won't Start Up/Boot

    My iMac won't start up. I've tried holding all kinds of key combinations while I turn it on, but it doesn't even get that far. It gets stuck on a folder with the Apple picture alternating with a question mark. It doesn't do anything else for a while, and then the fan turns on (???).

    This is indicative of a corrupted system or drive. The first thing to try is:
    Repairing the Hard Drive
    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.) 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, then quit DU and return to the installer. Now shutdown the computer for a couple of minutes and then restart normally.
    If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger) and/or TechTool Pro (4.5.2 for Tiger) 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.
    If this doesn't solve the problem then you will have to reinstall OS X. If the drive tests out OK per the above then you can reinstall without erasing the hard drive:
    How to Perform an Archive and Install
    1. Be sure to use Disk Utility first to repair the disk before performing the Archive and Install.
    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.
    Why reward points?(Quoted from Discussions Terms of Use.)
    The reward system helps to increase community participation. When a community member gives you (or another member) a reward for providing helpful advice or a solution to their question, your accumulated points will increase your status level within the community.
    Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

Maybe you are looking for