On start up sometimes I get a blue screen and start up hang there

On start up I sometimes get a blue screen and it hangs there the only way to get out of this is to turn the iMac off at the back then when you turn it back on the desk top appears without going through the startup screens. Even had the blue screen when starting in safe mode.

Then run Apple Hardware Test in Extended Mode, it's possible you have a hardware issue. If you still can't locate the issue the next step is taking the machine in for a professional diagnosis at your local Apple Store or AASP.

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  • On startup Mac Pro I get a blue screen and a cursor on the upper left. The mouse cursor shows up independently. Is it likely a video card failure?

    On startup Mac Pro I get a blue screen and a cursor on the upper left. The mouse cursor shows up independently. Is it likely a video card failure?

    I managed to boot the computer and get the desktop to show. I now have a "repaired" computer. There are several problems that have cropped up. One is that I can only start up now in Safe Boot mode. Is there a way to turn it off? Also, I do not have a sound list, so I can't access anything requiring audio. Google Chrome only shows up as a white screen. Pictures that loaded before don't load in browsers, etc. Any suggestions? I figure I should reinstall Mac OS Lion for starts, maybe even do a mirror backup and reformat the drive. I think this drive has turned into scrambled eggs...what a headache!

  • While finalizing I get the blue screen and my laptop shuts down?  HELP!

    I pasted the diagnostic thing below but dont understand why I keep getting that blue screen and my computer to shut down on me. I have tried a couple of different brands of c.d.'s and can't figure it out. The computer is 2-3 months old I dont get it. Please help!
    Microsoft Windows XP Professional Service Pack 2 (Build 2600)
    Sony Corporation VGN-FJ290P
    iTunes 6.0.4.2
    CD Driver 2.0.4.3
    CD Driver DLL 2.0.3.2
    LowerFilters: dvd43llh (3.5.0.0), PxHelp20 (2.0.0.0),
    UpperFilters: GEARAspiWDM (2.0.4.3),
    Video Driver: Mobile Intel(R) 915GM/GMS,910GML Express Chipset Family\Intel(R) 915GM/GMS,910GML Express Chipset
    FlashMedia\MSorMSProDevice, Bus Type SSA
    IDE\DiskHTS541010G9SA00_______________________MBZOC60D, Bus Type ATA, Bus Address [0,0]
    IDE\CdRomPIONEERDVD-RW__DVR-K16D________________1.00___, Bus Type ATA, Bus Address [0,0]
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    Some computers need an update to the ATA or IDE bus driver, or Intel chipset. If iTunes has problems recognizing CDs or hanging or crashing while importing or burning CDs, check the support site for the manufacturer of your computer or motherboard.
    Current user is administrator.
    E: PIONEER DVD-RW DVR-K16D, Rev 1.00
    Audio CD in drive.
    Found 19 songs on CD, playing time 76:13 on Audio CD.
    Track 1, start time 00:02:00
    Track 2, start time 04:01:65
    Track 3, start time 08:02:08
    Track 4, start time 11:43:11
    Track 5, start time 15:43:55
    Track 6, start time 22:23:05
    Track 7, start time 25:45:55
    Track 8, start time 29:38:08
    Track 9, start time 33:28:34
    Track 10, start time 37:56:60
    Track 11, start time 42:25:28
    Track 12, start time 45:26:27
    Track 13, start time 49:08:66
    Track 14, start time 54:05:27
    Track 15, start time 57:58:62
    Track 16, start time 60:52:58
    Track 17, start time 64:56:31
    Track 18, start time 68:26:42
    Track 19, start time 73:01:53
    Audio CD reading succeeded.
    Get drive speed succeeded.
    The drive CDR speeds are: 4 10 16 20 24.
    The drive CDRW speeds are: 4.
    The drive DVDR speeds are: 4 10 16 20 24 0.
    The drive DVDRW speeds are: 4 10 16 20 24 0.
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    I recently purchased Norton stuff and loaded it but dont know how to do all that stuff you said to do.
    okay.
    was that Norton Internet Security 2006? if so, right-click on the yellow ticky-Norton thing down in your task bar, and select "Norton Protection Center". click the LiveUpdate button. install everything it says is available at LiveUpdate. restart the PC if it asks you to.
    open Norton Protection Center again. click on "Norton AntiVirus". click on "Scans". click on "Run full system scan".
    once that's finished, and you've dealt to everything that shows up, do a spyware scan. if you don't have an antispyware program, download and install the free trial version of Ewido, and scan your PC with that.
    ewido anti-malware download
    once that's finished, and you've dealt to anything that shows up, go to the Symantec website (they make your Norton), and run one of their online virus scans. they take an eternity, so you may want to do that overnight:
    Symantec Security Check
    to do a disk cleanup, go "start > all programs > accessories > system tools > disk cleanup"
    to run chkdsk (that's a disk checking/repair utility in Windows), close all active programs, go into My Computer, right-click on your hard drive, select "properties", click on the "tools" tab, and click the "check now" button.
    to do a disk defrag, go "start > all programs > accessories > system tools > disk defragmenter"
    love, b

  • My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

    My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

    Take each of these steps that you haven't already tried. Stop when the problem is resolved.
    To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
    Step 1
    The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
    There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
    a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
    b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
    c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
    d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
    Step 2
    If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
    Step 3
    Sometimes a startup failure can be resolved by resetting the NVRAM.
    Step 4
    If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
    Step 5
    If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
    Step 6
    Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
    Step 7
    If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
    Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
    Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
    The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
    If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
    If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
    Step 8
    Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
    This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
    Step 9
    If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.  
    Step 10
    Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
    Step 11
    Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
    Step 12
    This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
    Step 13
    If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

  • When starting the computer, I get a grey screen and following status: your startup disk is full. How can I still enter (in order to free-up some space)?

    When starting the computer, I get a grey screen and following status: your startup disk is full. How can I still enter (in order to free-up some space)?

    Simple way to make HDD free space is delete files you don't need anymore.
    Or get bigger drive and external HDD case, then:
    1) install bigger HDD in external drive case.
    2) connect external drive and format and mount it with Disk Utility.
    3) make clone with Carbon Copy Cloner or SuperDuper!(source drive is internal HDD, target drive is external one).
    4) install external bigger drive into your Macbook Pro.
    In the cace if your're using Mac Pro:
    1) get bigger HDD and install it in drive bay of Mac Pro.
    2) format and mount it with Disk Utility.
    3) make clone with Carbon Copy Cloner or SuperDuper!(source drive is old HDD, target drive is new one).
    4) Select boot drive to new bigger one.

  • HT4848 Hi my name is Hajk and i got a friend that has a problem with her macbook, she gets a blue screen and cant log on. So i told her if she had an reinstall disk so that i could reinstall for her but she didn't get one with the macbook. what can she do

    Hi my name is Hajk and i got a friend that has a problem with her macbook, she gets a blue screen and cant log on. So i told her if she had an reinstall disk so that i could reinstall for her but she didn't get one with the macbook. what can she do ?

    If this is a fairly new Mac running either v10.7 Lion or v10.8 Mountain Lion she can use Lion or Mountain Recovery to repair the startup disk or reinstall OS X.

  • After starting iTunes 11, I get a blue screen error

    So after I updated my iTunes to v11, it started up and it was great! Then I rebooted my PC. After logging in, I started iTunes 11. Nothing happened for a few minutes. Then the screen became black for half a minute or so and then I get the blue screen error. Now this is happening all the time when I start iTunes 11 or if I connect my iPod Touch 4g for starting.
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    Thank You!!

    Not sure, but try these.
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  • Why can't I access my own wifi? why do I get a blue screen on start up or after watching a netflix movie, and why is it getting so hot?

    My mac has been showing a blue screen on start up and before shut down, especially after netflix. Is it silverlight? Why can't I get on my own wifi? It defaults to a linkys public network, I try to access the secure network, type my password, enter, and I get connection timeout.

    I was re-decorating my blogger .. then I got the 'Bad Request Error 400' ..  I re-formatted my computer, reloaded all .. I can now access my Blogger sites .. Don't know what the problem is/was, but I solved it by reloading my computer to Out-of-Box condition, and all is perfect now  .. I have an alert set up for this Error 400 .. Masses of people are having problems daily ..
    http://littlemisscinderellasquotes.blogspot.com/

  • My ipad 4 freezes a lot and sometimes i get a blue screen. What can i do?

    For couple of weeks now im havin problems with my ipad 4.
    It freezes very often, restarts it self alone.
    I also get a blue screen n i have to off it by myself n restart it.
    Any idea y it happens?
    Any solution?
    Thx

    Frozen or unresponsive iPad
    Resolve these most common issues:
        •    Display remains black or blank
        •    Touch screen not responding
        •    Application unexpectedly closes or freezes
    http://www.apple.com/support/ipad/assistant/ipad/
    iPad Frozen? How to Force Quit an App, Reset or Restart Your iPad
    http://ipadacademy.com/2010/11/ipad-frozen-how-to-force-quit-an-app-reset-or-res tart-your-ipad
    iPad: Basic troubleshooting
    http://support.apple.com/kb/TS3274
     Cheers, Tom

  • How to get past blue screen at start up on MacPro?

    I have a blue screen at start up and the MacPro won't boot up.
    Before I attempt to hold down keys at start, pls let me know which one to hold down.

    See if there is assistance here:
    https://discussions.apple.com/docs/DOC-5282
    Ciao.

  • After login I get a blue screen and then back to login window, but only for one account

    When one of the users on the iMac tries to login it goes to a blue screen and back to the login window.  This only happens with one of the users - I've tried doing a safe boot, running disk utility, and using Time Machine to restore the user's libray back to pre-problem timetable.  When I run repair permissions I do gt a SUID file "usr/sbin/vpnd" and "usr/sbin/pppd" have been modified.  Any ideas?

    Try this...
    http://reviews.cnet.com/8301-13727_7-20013630-263.html
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  • Starting Iphone up after getting a new screen and lost my pin code

    Hi
    I have just got my screen changed and I used to use the touch for a pin code and cannot remember the pincode.
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    -> iOS: Forgotten passcode or device disabled after entering wrong passcode

  • While running my macbook air it suddently gets the blue screen and i have to shut it down

    can i do to fix it ?

    power off then:
    perform SMC reset
    SMC reset
    Shut down the computer.
    Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
    On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
    Release all the keys and the power button at the same time.
    Press the power button to turn on the computer. 
    report back
    What initiated this? anything?  
    If same contact Apple for free in shop diagnostic and possible repair.

  • My iMac freezes at start. I just get the gray screen and apple symbol.

    I turned it off and on and then nothing. Just gray screen and spinning wheel. I also see the mouse pointer.

    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.
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    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/.

  • Won't wake up from sleep, sometimes get blue screen and can't get it to wor

    I have two problems that may be related. I am using a PowerBook G4 (Tiger 10.4.5). Sometimes when I turn it on I get a blue screen and that's it. Nothing else will come up. I have to do a forced shut down and then restart it with the shift key depressed and run repair disk permissions and then it works okay till the next time it decides to return to the blue screen (once a day approx.).
    Also, sometimes it goes to sleep and will not wake up. I have to shut it down and then restart it (sometimes getting the dreaded blue screen).
    This just started happening after I installed Tiger.

    Hi, vfv. Welcome to the Discussions.
    1. You wrote: "Sometimes when I turn it on I get a blue screen and that's it. Nothing else will come up. I have to do a forced shut down and then restart it with the shift key depressed and run repair disk permissions and then it works okay till the next time it decides to return to the blue screen (once a day approx.)."Your description suggests a corrupted or incompatible Startup or Login item. As Adrian suggests, my "Troubleshooting Startup and Login Items" FAQ can help you determine which Startup or Login item is causing the problem.
    2. As to the sleep problem, here are some ideas for you:2.1. If you are using a Bluetooth keyboard or mouse, see "Mac OS X 10.4 Help: My wireless mouse and keyboard won't wake my computer.".
    2.2. Your Mac maybe frozen or hung. Troubleshooting freezes and hangs is not unlike troubleshooting kernel panics: the steps are virtually the same. For a more exhaustive troubleshooting procedure, you could use the steps in my "Resolving Kernel Panics" FAQ.Good luck!
    Dr. Smoke
    Author: Troubleshooting Mac® OS X
    Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
    I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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