Carillon of boot loop - start 2011 MBP will not start.

I have a start 2011 15 "MBPro8, 2

Quad Core Intel Core i7

2.30 GHz

Boot ROM version: MBP81.88Z.0047.B2A.1506082204

Intel HD Graphics 3000 VRAM:512 MB

AMD Radeon HD 6750M VRAM:1 GB

8 GB of RAM 1333 MHz DIMM0

It will not start.  Trying to start the machine, it enters a loop-

1. startup chime

2. grey screen with Apple

3. the small wheel starts to turn under the Apple

4. the screen goes black

... and the cycle starts over.

The computer does not start in Mode safe.  In an attempt to safe mode the loop above has the addition:

3. a progress bar is displayed but does not progress.

I have reset the PRAM

It will start up in target Mode, so I was able to recover data

In target Mode, I was able to run first aid utility on the drive.  This has not fixed the problem.

I can hold down the Option key and see Macintosh HD and the recovery Partition.  If I try to boot from the recovery partition, I get the same loop.

I can start in the Test of online material, which revealed no material problems

I can boot in Verbose mode and it always happens in the same place

Execution fsck_hfs (version 226.1.1 of hfs)

BootCacheControl: cannot open /var/db/BootCache.playlist: 2 no such file or directory

' ' It would be possible for me to insert the "var/db/BootCache.playlist" file using target disk mode?

Other thoughts?

Check Google for this error, it seems to be common.

Apparently the startup configuration file is corrupted. These 2 articles can be useful:

http://www.Hackintosh.computer/?p=67

https://www.iFixit.com/answers/view/192201/unable+to+open+-var-db-BootCache.play list % 3A + 2

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    Not too sure if it's because the hard drive is 1 TB (but Vista was on the same front hdd with Windows 7). I tried to remove the 2 GB of ram (I use 4). No go. Tried another DVD rom, not go. Removed USB devices that have been connected. No go. I know that the DVD itself is fine. I tried on the other PC here, the installation screen came within 2-3 minutes. But his is not a 1 to (its 250 GB) the only DVD that will work / I install is the Windows 7 DVD.  So, how can I reinstall Vista?

    I deleted all partitions / recreated with the Win7 installation as well. Still couldn't get Vista to get to the Setup screen

    Any info appreciated

    Thank you

    Finally fixed it. I read that USB legacy can also cause this. So, I disabled it. Everything is good. Managed to get to the Setup screen, then reinstall Vista

  • Early 2011 MBP 15 "dual SSD - lost with boot camp edition

    Hello community!

    I lost my mind with boot camp troubleshooting during the last week. This is going to be confused reading, but I'm afraid I got worse... So please try to face me.

    Starting point - of course I can install Windows 10 on my MBP 2011 early!

    Material

    Early 2011 MBP 15 "with Intel HD 3000 and AMD Radeon HD 6750M

    and the optical drive, replaced by an other SSD with a caddy

    Of course, I didn't have an optical drive on the spot so I realized that I need to install to get the option to boot from USB - I did find. I managed to make a bootable USB from. ISO with UNETBOOTIN. First of all, I got score of huge problems with that I finally managed to Dodge with diskpart - software on Windows Installer USB after NVRAM reset before each attempt to install with CMD + Option + P + R, I had to also remove the OSX SSD during the installation of VICTORY for everything the world some boring as Windows could not update the configuration to start the computer. Unable to continue installation -problem.

    After all:

    -> I managed to install WIN10 on my MBP education

    -> A lot of festivities fun! < 3

    -> After installing the bootcamp drivers all active windows went to "invisible desktop on the left" (I closed the other workstations...) where I managed to lift one of the windows on the central office with lucky and "move" action (I have no idea...)

    -> after reboot apparently drivers Intel HD 3000 went haywire and I got black screen on black with details in black (black screen Uni)

    Conclusion: I try Windows 8.1 (pro) because at least he is supported by my Mac AND it has same installation and should work.

    At one point I tried to use my old drive via USB to install Windows 7 and 8.1 pro

    -> PROBLEM CDBOOT: couldn't find the BOOTMGR

    -> I moved along back USB and WIN8.1

    8.1 Windows Pro was installed easily, with the same procedure. When running boot camp display drivers turns black during the "Intel - graphic" installation period. I can confirmed that starting mode safe mode when the screen works, but I can't install Catalyst drivers-> so I can not play games that was the only reason for dual boot. In addition, there is no sound. So lack of drivers: no picture, no sound.

    There... I think I forgot to say something. I was hoping just that if someone could help me with this problem. I lose my head here. I have not really direction where to go next, but I have a few options I can try after that I understand my morale of my troops.

    1. Remove my boot OS X SSD, switch my SSD Windows instead of him and put my Superdrive. So I would basically just install windows. Earlier, I had 8 windows work via the DVD and bootcamp.
    2. Try to play with the drivers on Win8.1 more
    3. Reinstall windows. There may be something wrong with my. ISO or USB?
    4. Delete the EFI to correct CDBOOT?

    Thank you in advance!

    You must use Bootcamp Assistant for everything, including the form/partitioning implementation and the removal of partitions...

    I would like to reformat the second SSD (on which should be installed W10) with diskUtility. Then start bootcampassistant on SSD1 and do all this.

  • HD will start another mbp, but not its own

    I asked this question earlier but with no resolution. Then I will try again but more simply asking.

    Here goes:

    I have a 2010 mbp that works very well. I have an another 2011 mbp which does not start. It is suspended on a progress bar of the half.

    Notes on the 2011:

    -hd has been cleared with a clear three-pass. New El Capitan installed.

    -new RAM chips from Crucial

    -safe mode does not start

    -verbose mode does not start

    -single-user mode does not start

    -utility mode does not start

    SATA cable - is not the issue. A good known was traded with no effect.

    * If removed from the computer, the drive 2011 will start the 2010 via usb.* *.

    From there, I ran disk on her utility (el capitan) and happens without any problem.


    A spanking new SSD has been installed inside the 2011 and does not start the 2011 under any mode.


    I think it is safe to assume that the SSD and HDD of 2011 are working very well.

    What could be another that I can test?

    Logic board failure?

    If the logic board, is there a test I can run using the 2010?

    Thanks in advance for any input on this head-scratcher...

    You better Genius Bar appointment to show the circumstances you are facing with now.

  • HD will not start from host organization but will be of a different MBP

    ((Two Mbit/s: 1) mid 2010 i5 model 1) Middle model i7 2011.

    From here, I will call them as "i5 and i7.

    The i7 was having starting problems. The taskbar would charge about 2/3 of the way in which it would "hang up" then the screen turns off. Unsuccessfully trying to boot in safe mode. Verbose mode would freeze as well. Tried the single user mode and run ' fsck - fy "and it made no difference. No idea how fix permissions with the utility El Capitan disk but I'm not sure it would make a difference. Doesn't it?

    I then did a backup/clone of the i7 to a new external storage disk. All programs and files are successfully transferred.

    Then I wiped the i7 with a clear three-pass and reinstalled OSX.

    Error #1) I have not test to see if the hd now Virgin began its host computer before you restore the old files.

    Error #2) I put the clone on the i7 copy using Super Duper.

    When installing the i7 to its host computer, it wouldn't boot in any mode just as before.

    * Comment: The i7 will start the i5 laptop when connected via USB in system preferences > startup disk.

    I am currently using the i7 connected to the external i5 as I type this.

    Disk utility has been run on the i7 at this point by indicating zero problems.

    Onyx has been run through all the options and check marks with no problems.

    Always the i7 will not start its host computer.

    I am very confused.

    Issues related to the:

    (1) why/how this phenomenon occur?

    (2) in making the i7 clone for external storage, if there was a hidden virus or something on the i7 origin, is the now compromised storage device?

    I read it twice and I'm still a little confused.

    When you cloned the i7, you do it from the other computer?

    I get the i7 disc starts from the i7 computer when it is connected to the outside. Is this correct?

    If the player starts in an external of the i7 box, but not in the computer the case most likely is the SATA cable to the hard drive.

    Try to replace.

    Kim

  • Windows XP media center keeps going in a loop and will not complete the boot.

    Rebooted PC, probably because of an update, but I also dropped the mouse wireless in the word, and I don't know if that's the problem.  To start Windows and I have three choices, but if I choose safe, last known config, or normal mode, it ends the countdown and starts, but loops to the same black screen that has the countdown.  Help!   Thank you very much.


    Remember - this is a public forum so never post private information such as numbers of mail or telephone!

    Ideas:

    • You have problems with programs
    • Error messages
    • Recent changes to your computer
    • What you have already tried to solve the problem

    the problem is known as "boot loop" and it is generally caused by a lack of disk and file system tune up

    There are commands that can be executed in the disk prompt that will help stabilize the boot process.

    However, you need to start with any xp cd and launch the recovery console to log on to the disk system.

    then the disc prompt, run the following commands >:

    Chkdsk

    Fixboot

    FIXMBR

    (the fixmbr will provide a serious warning, but you can ignore the scarecrow)

    then the output, remove cd and the system should be able to boot normally again.

    DB·´¯'·.. ¸ >-))) º > ·´¯'·.. ¸ >-))) º > share nirvana mann

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