Blue screen appears during start up and freezes

During start up the apple logo appears and locks up. Re booting results in blue screen. After re booting 3 or 4 times finally boots fine.

If you are still not working properly you might want to try the recovery mode http://support.apple.com/kb/HT1808
It is a useful link to keep in mind.

Similar Messages

  • Blue screen appears during start up

    Hi! My macbook before it bacame a blue screen, shows that the start up disk is almost full but i ignored it...and then suddenly it doesn't start up anymore and shows only blue screen with arrow...pls help! I don't know much about computers! :(

    Boot up in Safe Mode.
    Startup your Mac in Safe Mode
    A Safe Mode boot takes much longer than a normal boot so be patient.
    Once you are in Safe Mode, you need to delete data in order to free up disk space, ie., photos, video, etc.
    When you are in Safe Mode, control click the MacintoshHD icon on the desktop then click Get Info. You'll see Capacity & Available.  You need at least 15% available disk space.
    Then click Restart from the Apple () menu.

  • Satellite P100-347: Blue screen appears on start up - unable to boot volume

    Recently I left my 2 younger brothers playing NFS Carbon on my satellite P100-347, preinstalled with media centre 2005 edition, and now it fails to startup.
    During the startup process eventually a blue screen is displayed for about a second and then it shutsdown (I manged to make out the words "unable to boot volume" from the blue screen).
    I tried booting with an XP media centre DVD but it only gives me an option of reinstalling the OS with a price of losing all my very important data. Normally I would have recovered the system but I don't want to lose my data.
    Is there anything i can do other than taking it to a technician?

    Hi
    Well, mostly the BSOD appears due to a hardware problem or serious software issue.
    In your case the software problem is possible
    Unfortunately, I think the new OS installation is the best way to get the notebook running correctly.
    Now you want to know how to save the data and files well, I think you should remove the HDD from notebook and should try to connect the 2.5 HDD via external USB controller to another computer. Then you could save the files on the other HDD
    I think, now you know that the regular backups are important and necessary!!!!

  • Blue screen appears after installing Leopard and restarting

    I tried to install Leopard on my MacBook but got the Blue screen after restarting. I found the apple support article number 306857 and tried option C without success. I don't have a firewire cable so option A is out. I don't know how to reinstall Leopard as Option B suggested. I can't get beyond the blue screen. Any suggestions?

    The Apple site is under maintenance, so I can't check the details of the options, but I assume option C is the terminal, when you've started up in Safe Mode. This method worked for me on two machines. You need to type the commands precisely and exactly as they appear in the article, including spaces where appropriate.
    To reinstall Leopard, start up with the installation disk in the drive, and when you hear the startup chime, hold down the C key on your keyboard. You need a USB keyboard. You should get the installation screen.

  • Blue Screen Error during starting Windows Server 2008 R2 (VM on Hyper-v WinSvr2012) Using a Physical to Virtual (P2V) VHDX.

    Hi There,
    I'm trying to migrate one of my physical Windows Server 2008 R2 to Virtual Environment (Hyper-V on WinSvr2012).
    (The original physical machine had multiple partitions on the windows HDD and 2 other boot able OSs where installed on 2 of those partitions ...) So anyhow,  After heaps of trouble shooting and fixing the boot records, it finally started booting the
    Windows but when it got to loading C:\windows\System32\Drivers\Classpnp.sys
    and it crashed, a blue screen poped up saying "A Problem has been detected and windows has shut down to prevent damage to your computer ... ) and then system got rebooted automatically.
    I have tried chkdsk, also tried copying a new classpnp.sys to replace the old one but no hope. I don't think is not a damage file issue. Not sure, but it is probably related to changing the HDD devices or SCSI/IDE controllers?
    Any idea? 

    1. You have placed your problem in wrong forum. Address your problem to Server forum instead.
    2. I do not think it is liable configuration. I have not heard about migration of multiboot HDD. Try to split it. Pay attention to better preparation. I would expect separate target VM.
    Regards
    Milos

  • After upgrading to Lion blue screen appears at start up have to reboot to log in

    I have been having issues when I first downloaded and installed Lion it installed then when it rebooted a blue screen would appear and nothing would happen. I rebooted the system and it came up. Now I installed the latest software update and the same thing happend did the same steps. Yesterday I had to boot my computer up twice for it to get to the lion login screen.  I have called apple and their resolution is to wipe out and restore from time machine.  Has anyone else seen this issue?

    Sounds like directory damage of some sort. A few options.
    1) Buy Diskwarrior. Probably the premier tool for directory repair. There's a download version but it needs to be run from a booted drive which it seems you don't have. You can wait for delivery of the disc which will allow you to boot from the disc and run the application.
    2) Buy an external firewire hard drive. Get one big enough for future backup use. Meanwhile, install a new version of the operating system on that drive, boot from the drive and see if you can even see the files on the main rive. If directory damage isn't too bad you may be able to copy critical ones, though the problem with directory damage is you don't know if you're copying a damaged file. That's when just getting Diskwarrior first may just make more sense.
    OSX doesn't let you make a bootable disc just by copying files onto a CD the way OS9 used to. There's a utility called CloneX that does this, but I haven't tried it. Usually what you can do is clone hte internal drive to an external drive as part of backup. The cloning places a bootable copy of the OS onto the external. Simply dragging OS files across no longer works.
    By the way, the external drive has to be Firewire in order for it to be boootable. USB is okay for backup but you can't use it to boot an older computer in an emergency (new Macs are okay).

  • TS1884 white screen appears during power on and a sound other then the start up sound. Piano key sound low tone.

    After a long delay text shows up on a black screen : No bootable device -- insert boot disk and press any key  - what do I do to get the MacBook Pro to start up?

    Hello,
    Try CMD+r key at bootup, anything show up?
    Try alt or option key... any boot devices show up?

  • Blue screen appears after macbook froze and restarting

    yesterday my macbook froze after trying to copy some files onto my hd. so i restarted it and switched back on only to find that the apple logo screen stays there forever and the system won't load. so i tried the apple support article number 306857 and used option c without success. i cant use option a because i dont have another mac and option b i cant use because my cd drive is broken atm. so if someone would be kind enough to show me exactly how to setup the commands so i could do it correctly, becuase i really don't understand how to type out the commands.

    http://support.apple.com/kb/TS1545 shows these steps.
    Start up in single-user mode by *holding Command-S after restarting the computer*. Note that single-user mode always uses the US English keyboard layout.
    *Type these commands, each on a single line followed by Return:*
    /sbin/fsck -fy
    /sbin/mount -uw /
    rm -rf /System/Library/SystemConfiguration/ApplicationEnhancer.bundle
    reboot

  • My Iphone 4 was making a weird noise, it glitched for a minute, then a blue screen appeared, it turned off and won't turn back on at all. Please help!

    Please help me! I will be so thankful!

    Try a reset, hold down the home/sleep button together until you see the apple logo and then release, then wait for the phone to boot back up.

  • IPad Air with iOS 8.02 freezes and blue screen appears. What should be done ? Why is this happening ?

    IPad Air with iOS 8.02 freezes and blue screen appears. What should be done ? Why is this happening ?

    If nothing else works, you might try this one. It has worked for many others ...
    Use iTunes to do a reset to factory default condition. Always be sure to do your backups before fiddling with your iPad. You might do both the iCloud and the iTunes backup, just to be sure!
    Back up and Restore your iOS Device with iCloud or iTunes
    http://support.apple.com/kb/ht1766
    iTunes: About iOS Backups
    http://support.apple.com/kb/ht4946
    Use iTunes to Restore your iOS Device to Factory Settings
    http://support.apple.com/kb/ht1414
    Various issues from many different users have been solved by this. I've lost count on how many have been helped by this, so far. But, it doesn't mean EVERYONE will be helped, but I've seen a whole lot. You can only try and see ...
    iPad 2 and iOS 8.0.2 Problems
    For all iPad 2 owners, this is an important solution for you! These problems result from long-term use, continuous upgrades, corrupted files and various glitches that happen over this long term use. You just need to get your iPad 2 back to FACTORY FRESH CONDITION to start out clean!
    Here's one person's solution which will help a lot of iPad 2 users!
    keithfrommariettaOct 12, 2014 3:25 PM Re: IPAD2 very slow after IOS 8 upgrade
    Re: IPAD2 very slow after IOS 8 upgradein response to pacoKAS
    SOLVED:  IOS 8 Issues on iPad 2:
    I just returned home from a visit to the Genius Bar. Like you and many others, when I upgraded my iPad 2 to IOS 8, it became practically unusable. It was VERY slow, lagged whenever trying to to do anything. Lots of screen freezes and apps spontaneously crashing. I was convinced that the processor on the iPad 2 just couldn't handle the new IOS and I went in to see about restoring to IOS 7.
    Thankfully, I was hooked up with a very sharp guy at the bar. The problem is not with the OS, it is with it being an *upgraded* OS. He used the analogy of when you had an older Windows computer and how over time (and over upgrades), they just tended to get slower and slower because of all of the garbage that was carried forward in the upgrades. At those times (and if you've ever had a Windows computer, you get this), the only thing that would speed it up would be to wipe the machine and do a fresh install of the current OS and then reload your apps, and the viola, everything would be fast again. Well, it turns out that IOS can suffer the same problems.
    THE FIX:  FIRST, be sure you have a current iCloud backup of your device.  Connect your iPad to a computer that has a clean fresh copy of IOS 8 on iTunes (this is best done with a computer other than the one that you sync your device to because you DO NOT want to restore it from a back up just yet). Ideally, if you do this at an Apple store you'll be assured of the right version there and someone to answer any questions you might have along the way. You then hold the power and home button down to hard-reset the device and continue to hold them down until it reboots into recovery mode. You then follow the instructions on the computer to reinstall the OS on the device (which wipes everything from it and then reinstalls a clean copy of it). Once this is done (which only takes about 15 minutes), your device will reboot and ask you to set it up. Answer the questions about language, location, etc. and continue until it asks you to log into your iTunes account. Once you do that, it will ask if you want to either 1) Set it up as a new device, 2) Restore from iCloud, or 3) Restore from iTunes. Choose (2), restore from iCloud. This will ensure that it brings down "clean" copies of all of your apps and preferences rather than the potentially corrupted ones that might reside in your iTunes backup. That's it! It will take a few hours depending on how much data and apps you have, but I am happy to report that my iPad 2 is now running IOS 8 and it's running as fast as it ever did when it was brand new!
    To sum it up, this process 1) Wipes your device and the garbage causing your problems, 2) Loads a clean and bug-free version of IOS 8 to your device, and 3) restores your apps and data so that it looks just like it did before the wipe, with the exception that it works now!  :-)
    Note also that by following this process you don't have to go through the painful and laborious process of reloading all of your apps, data and/or settings. iCloud takes care of all of that for you.

  • There is always a blue screen appears after the Apple logo during the booting process. And then everything is back to normal. What is this thing? Is there something wrong with my screen or something?

    There is always a blue screen appears after the Apple logo during the booting process. And then everything is back to normal. What is this thing? Is there something wrong with my screen or something?

    Nah - that's just the normal boot process.
    Clinton

  • HT4177 My mackbook pro suddenly freezed and when I swiched off and on again, a grey screen appeared with an apple logo then a loading circle underneath, and after a few hours, a blue screen appeared. What shall I do with this?

    My mackbook pro suddenly freezed and when I swiched off and on again, a grey screen appeared with an apple logo then a loading circle underneath, and after a few hours, a blue screen appeared. What shall I do with this?

    What operating system version, and do you have any backups of your data off the machine? TimeMachine? Option Key bootable clones? Storage? DVD's?
    A reinstall of the operating system may be in order as a last resort, so if any of these steps on these links get you into the machine, make sure to backup your personal data (Music, Pictures, Documents, Movies) off the machine to a non-encrypted  powered external drive regular storage drive (not TimeMachine as it might be corrupted too) and disconnect as soon as possible.
    Good Luck and report back all what you tried.
    Also report what change occured before this tragedy happened, was there a  Software Update? A EFI firmware update? Etc.
    https://support.apple.com/kb/TS3148
    more:
    https://support.apple.com/kb/TS2570
    http://docs.info.apple.com/article.html?path=Mac/10.6/en/8963.html
    To boot off the 10.6 install disk, hold c or option key while the disk is in the machine.
    To boot into 10.7 Recvoery mode, hold the command and r keys down while booting.
    To use Safe mode, hold down the Shift Key while booting.
    Other assistance
    https://support.apple.com/kb/HT3964
    https://support.apple.com/kb/HT1379
    https://support.apple.com/kb/ht1782
    https://support.apple.com/kb/HT1564

  • Blue screen appears on startup and at shutdown

    A few months ago, I bought a macbook pro and it was doing fine. But recently, every time it starts, a blue screen appears for a split second then it goes to log- in. Then, every time I shutdown, it will also show up for a split second then shutdown. It doesn't affect the computer but I'm just wondering how to stop it.

    I couldn't rember what time it started so, I shut down my computer and the blue screen appereed at 8:39:28. But went I turned it on, the blue screen did not show. So, I turnned it of and on again and no blue screen. I did it several times and now the blue screen isn't showing. But I will post the test that showed in the concel during 8:39, when it powered of blue, to the time I powed it on, when the blue screen did not show. If you need more, I will try to give it to you. I'll post again if it shows up again. Also I  should edit out ethernet address too right?
    Here's what its says:
    8:38:07 PM kernel: I0Surface: buffer allocation size is zero
    8:38:47 PM kernel: I0Surface: buffer allocation size is zero
    8:39:28 PM mds: (Error) Server: ==== XPC handleXPCMessage XPC_ERROR_CONNECTION_INVALID
    8:39:28 PM com.apple.launched.peruser.501: (com.apple.talagent.[236]) Exited: Killed: 9
    2/19/12 8:39:28.145 PM
    com.apple.launchd.peruser.501
    ([0x0-0x18018].com.apple.iTunesHelper[284]) Exited: Killed: 9
    2/19/12 8:39:28.145 PM
    com.apple.launchd.peruser.501
    ([0x0-0x13013].com.apple.AppleSpell[260]) Exited: Killed: 9
    2/19/12 8:39:28.147 PM
    com.apple.launchd.peruser.501
    (com.apple.mdworker.pool.0[452]) Exited: Terminated: 15
    2/19/12 8:39:28.203 PM
    loginwindow
    DEAD_PROCESS: 36 console
    2/19/12 8:39:28.467 PM
    shutdown
    halt by ___________:
    2/19/12 8:39:28.467 PM
    shutdown
    SHUTDOWN_TIME: 1329701968 466888
    2/19/12 8:39:54.000 PM
    bootlog
    BOOT_TIME 1329701994 0
    2/19/12 8:40:06.000 PM
    kernel
    PMAP: PCID enabled
    2/19/12 8:40:06.000 PM
    kernel
    Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64
    2/19/12 8:40:06.000 PM
    kernel
    vm_page_bootstrap: 986092 free pages and 54292 wired pages
    2/19/12 8:40:06.000 PM
    kernel
    kext submap [0xffffff7f8072f000 - 0xffffff8000000000], kernel text [0xffffff8000200000 - 0xffffff800072f000]
    2/19/12 8:40:06.000 PM
    kernel
    zone leak detection enabled
    2/19/12 8:40:06.000 PM
    kernel
    standard timeslicing quantum is 10000 us
    2/19/12 8:40:06.000 PM
    kernel
    mig_table_max_displ = 73
    2/19/12 8:40:06.000 PM
    kernel
    TSC Deadline Timer supported and enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=1 LocalApicId=0 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=2 LocalApicId=2 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=3 LocalApicId=4 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=4 LocalApicId=6 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=5 LocalApicId=1 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=6 LocalApicId=3 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=7 LocalApicId=5 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    AppleACPICPU: ProcessorId=8 LocalApicId=7 Enabled
    2/19/12 8:40:06.000 PM
    kernel
    calling mpo_policy_init for TMSafetyNet
    2/19/12 8:40:06.000 PM
    kernel
    Security policy loaded: Safety net for Time Machine (TMSafetyNet)
    2/19/12 8:40:06.000 PM
    kernel
    calling mpo_policy_init for Sandbox
    2/19/12 8:40:06.000 PM
    kernel
    Security policy loaded: Seatbelt sandbox policy (Sandbox)
    2/19/12 8:40:06.000 PM
    kernel
    calling mpo_policy_init for Quarantine
    2/19/12 8:40:06.000 PM
    kernel
    Security policy loaded: Quarantine policy (Quarantine)
    2/19/12 8:40:06.000 PM
    kernel
    Copyright (c) 1982, 1986, 1989, 1991, 1993
    2/19/12 8:40:06.000 PM
    kernel
    The Regents of the University of California. All rights reserved.
    2/19/12 8:40:06.000 PM
    kernel
    MAC Framework successfully initialized

  • HT3910 a blue screen appears at the start up

    When I start my macbookpro a blue screen appears and stays. Nothing further happens ; can anyone help please?

    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 and log in to the account with the problem. You must hold down the shift key twice: once when you boot, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot 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 boot 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, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

  • TS1541 a blue screen appears after a gray screen with the logo and the spinning gear

    start up problem...a blue screen appears after the gray screen and the spinning gear

    Try using Disk Utility to do a Disk Repair, as shown in this link, while booted up on your install disk. You could have some directory corruption. Let us know what errors Disk Repair reports and if DU was able to repair them. This could just be a start in repairs and you may need a better utility to finish the job.
    Then Repair Permissions.
    No need to report any Permissions errors........we all get them.
       DALE

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