MBP 2011 After reinstallation blue screen on Start up

I just got my new MBP last week and this is my first time using a Mac. (Bored of Win). I thought I had erased something important files so I decided to reinstall using the DVD that comes on it. The installation was good and the files are intact but noticed this blue screen came out after the Logo screen during start up and shutdown. I have read every discussions about this and followed accordingly but have no success. I even check my startup items but its empty.
Anyone could help me solve this?

I have read every discussions about this and followed accordingly but have no success.
Please describe in detail all you have attempted to do in order to resolve the issue besides checking your login items.
Disconnect all peripherals from your computer.
Safe Boot by restarting your computer while holding down the "shift" key. Safe booting disables all nonessential processes, often times allowing you to start up when you would otherwise crash.
As of OS X 10.5.6 Safe Boot deletes the dynamic loader shared cache location in the /var/db/dyld directory. A corrupt cache here can cause the blue screen crash. Once you restart normally, the cache will be recreated. This should take care of the issue.
http://support.apple.com/kb/HT1564
http://support.apple.com/kb/HT1455

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Blue screen at start up,safe mode only, resolved ,what next?

I got the old stuck on blue screen at start up ,
would only boot in safe mode , after two afternoons of RAM test , repairing disk permissions , hrdware tests , zapping PRam and the likes to no avail , I finally resolved the problem thanks to a tip from this forum:
bad video card drivers ( ATIRadeon 8500 ) , after removing them from the extension folder , it boots up! ( I tried to reset the pram , it won't work though , one chime only then nothing).
so I'm wondering what's next , can i reinstall the video card drivers only ?
is it the card itself ? (everything looks normal) or should I go for an archive and install ?
any input would be great,
Thanks,
JB

Hi-
Jean Baptiste mentioned that he removed extensions for the drivers.
Removing a conflicting driver is fine as long as the driver specific for the card installed remains.
In this case, I think it may have been a corrupt driver, rather than a conflicting driver.
Radeon drivers in OS X have a good track record of compatibility, and such driver conflict is not a historically common occurrence.
Hard drive maintenance with Disk Warrior is the best way to correct corrupt files, unless bad RAM is corrupting the files.....
In your case, it shouldn't hurt anything to remove the Radeon 8500 drivers.
Could it be the driver extensions that are preventing a proper boot. The monitor displays perfectly in safe mode so I don't understand why it would be the video card.
Booting to Safe mode unloads drivers. Only very basic core graphics rendering drivers are loaded.
No Quartz/Quartz Extreme, no Core Image, no 3D acceleration, etc.
This doesn't tax a graphics card.
Failure to boot, or failure of graphics when drivers are loaded are due to one of two things- corrupt drivers or failing components on the graphics card.
A reinstall of the OS can rule out the first.
Installing a different graphics card is the only way to rule out the second.
Before buying a new card, I would try a fresh OS.
Installing a new OS on a separate drive, and booting to that is an easy way to test.

Hi, Hi, Hi I have the old MacBook Pro. Upgraded to Mountain Lion which completely wrecked the system. So downgraded to Snow Leopard. The updated the combo update. Now stuck on blue screen at start-up. Need help. Greatly appreciated. Thank you.

Hi,
I have the old MacBook Pro. Upgraded to Mountain Lion which completely wrecked the system. So downgraded to Snow Leopard.
Then updated the combo update. Now stuck on blue screen at start-up.
Need help. Greatly appreciated. Thank you.

Downgrade Lion/Mountain Lion to Snow Leopard
1. 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
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2. After DU loads select your hard drive (this is the entry with the
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3. Under the Volume Scheme heading set the number of partitions
      from the drop down menu to one. Set the format type to Mac OS
      Extended (Journaled.) Click on the Options button, set the
      partition scheme to GUID then click on the OK button. Click on
      the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.

Blue Screen on start up with dual monitors

I have a macpro running Mac OS X 10.5.6 (9G55) when 2 monitors are hooked up to it the computer the machine Blue Screens on start up. This also occurs when the computer wakes up from a deep sleep. Currently the only work around is to just use one monitor. Ive read the posting here and on macosrumors.com, but there does not seem to be a solution, however most post are from last summer. Was this fixed at some point? Is there a solution? I also tried boot from another drive (from another macpro) with both monitors hooked up and the problem continues.
Ive also read the KB article and removed ApplicationEnchancer.bundle, but the problem continues.
http://support.apple.com/kb/TS1545?viewlocale=en_US
Any help would be much appreciated.
Thanks,
Scott

Scott,
Ok here are the next things on my list, and I will start with what I think is the most valuable to the just plain fun and simple you and I would be shocked if it fixed it. I only skimmed your other post, if you feel that something I recommend is a repeat you can ignore it and I will not take any offense. Sorry If my post is a little loopy I've been up for way to long.
1) Safe Boot your mac. To do so hold shift whilst your Mac boots. Please note it will take longer to load.
Starting up into Safe Mode does several things:
1. It forces a directory check of the startup volume.
2. It loads only required kernel extensions (some of the items in /System/Library/Extensions).
3. In Mac OS X 10.3.9 or earlier, Safe Mode runs only Apple-installed startup items (such items may be installed either in /Library/StartupItems or in /System/Library/StartupItems; these are different than user-selected account login items).
4. It disables all fonts other than those in /System/Library/Fonts (Mac OS X 10.4 or later).
5. It moves to the Trash all font caches normally stored in /Library/Caches/com.apple.ATS/(uid)/ , where (uid) is a user ID number such as 501 (Mac OS X 10.4 or later).
6. It disables all startup items and login items (Mac OS X 10.4 or later).
7. Mac OS X 10.5.6 or later: A Safe Boot deletes the dynamic loader shared cache at (/var/db/dyld/). A cache with issues may cause a blue screen on startup, particularly after a Software Update. Restarting normally recreates this cache.
http://support.apple.com/kb/HT1564
2) Try reseting the Pram.
Resetting PRAM and NVRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
http://support.apple.com/kb/HT1379
3) Reset the startup Disk. Open System Preferences -> Startup Disk -> Select Mac OS X.
I'll leave you with that, please come back with your results.
Weston

Help Blue screen on start up

Hey Guys,
I could use a little help on this one.
Symptoms:
I am only getting a blue screen on start up.
This happened after I downloaded an FLV player.
I think it was called "whimpy flv player."
Might be a coincidence (not sure).
I can start up in safe mode only and can get online hardwired, but the option for wireless is gone.
Any help would be appreciated.
Poncho

First try resetting your PRAM
Then try booting from your install disc and verifying/repairing your hard drive.
Disk Utility
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk.

My phone keeps on looping with the apple logo after the blue screen.

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What would cause a prolonged blue screen during start up?

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Jeff P.

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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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I am having problems with starting my iMac. It gets to the blue screen with "starting Mac OS X" but won't go beyond that point. I was able to get the disc drive open with the help of other posts, holding down the mouse while turning on the computer, but the drive won't stay closed with the install disc in it. I have even tried holding down the "c" key while restarting the computer and it wouldn't work. Any help would be greatly appreciated. So much info that I could really use. Also, please keep in mind that I am not too computer savy. Simple language please.
Thanks

If the steps I provided in my earlier post are not helping, then I see your options at this point as follows:
1. Run the Apple Hardware Test (AHT) that came the affected computer. See my "Apple Hardware Test" FAQ for comprehensive advice on using the AHT in troubleshooting.
2. Performing an Archive and Install. For important tips on this, see my "General advice on performing an Archive and Install" FAQ. Perform the steps therein in the specified order.
3. Take the computer in for service. If there is an Apple Retail Store in your area, I'd recommend taking it there. You may wish to call ahead to make an appointment at the Genius Bar.
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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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.

IPhone won't turn on after brief blue screen.

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Blue screen on start up. Safe mode not working?

Blue screen on start up. Safe mode not working, any suggestions?

Thank you, I had forgotten about target mode. I was able to back up all of my files. I also copied some additional 50 GB of files of the disk as a stress test and the hard drive worked fine and quick (and because it was quicker than retrieving the same files from a network drive to my desktop).
I was hoping to also unpack the Applejack files on my desktop and put them back so I could run them in single user mode without running /etc/rc. However I haven't been able to get my Linux desktop to mount the iBook in Read-Write instead of Read-Only yet (I don't have access to another Mac at the moment).

Stuck at Blue Screen on start up

My MacBook Pro gets stuck on the blue screen at start up. Have tried all the obvious fixes but no joy.
I put my mac in target mode and connected to another MacBook Pro
Then selected my HDD as the start up disc, rebooted, and this worked fine, i was able to run my HDD and all software fine.
I conclude this shows i have a hardware problem on my mac.
Can anyone please give me a clue as to what it might be? or is it time for a visit to the apple store (and a remortgage on the house)?
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I know you already mentioned that you "Tried all the obvious fixes" but this is the first thing that came to mind when I read your problem.
Hold down the power button until your Macintosh shuts off.
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Then release the button and see if your device boots up normally.
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MBP 2011 After reinstallation blue screen on Start up

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