Blue screen at start up Safe Boot however works...please help

After reading various posts around I can't nail it down...
My powerbook boots to a blue screen which changes 2 hues and then stops.
However, it will boot up in safe boot.
Things I have tried so far (hope I don't forget something):
1) Repair permissions.
2) Boot from Diskwarrior cd and perform repairs.
3) Reset nvram
4) Boot in open-firmware mode and reset pram and all
5) boot in single-user mode and perform that unix command ("fsck -fy" or something like that
6) ran apple hardware diagnostics from original apple cd that came with my powerbook. Here is where it gets interesting. The first time it reported an error with one of my RAM chips. I ran it again and it passed all tests. I ran it a third time and passed again...."hm..." I murmured to myself.
At this point I am suspecting it is a hardware problem but I can't trace it.
Keep in mind that the powerbook boots up fine Safe Boot mode.
Please help!

Unfortunately this problem remains unsolved.
I am able to work in safe mode however, no sound, no extensions, nada...
Too bad as I was eagerly waiting for the Airbook to be my pb replacement which isn't the case.
I a disappointed that Apple gave precedence to form over function for the Air. It will never replace
the tiny footprint of my pb, nor does it offer its options.
I don't care if a laptop is a millimeter thin. It still has the same footprint as a Macbook on a desk.
Apple tell us if this is easily fixable or should be just trash our PBs?
Other users report the same problem on various sites...

Similar Messages

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.

Blue screen after appemtping a safe boot. HELP!

I attempted a safe boot after receiving a gray screen w/ spining gear. I have since gotten a blue screen. PLEASE HELP!

Hello,
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, 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 at the top of the screen. (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. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

Startup issue - blue screen freeze before login - Safe Boot works fine?

I've not seen this before and I can't fix, wonder if anyone has any new suggestions, here is what I've tried so far... (safe boot works fine)
1. Verbose and Single user login
2. removing the startup folder from disk library
3. Zapping PRAM
4. Reset SMC
5. Zeroed disk and reinstalled system
6. Target disk and disk repair (No Problems Found)
7. Permissions repair (No Problems Found
8. Apple Hardware Test (No Problems Found)
9. System DVD Startup - Disk Utility (No Problems Found)
10. Network Startup - Disk Utility (No Problems Found)
In every case unless I hold the shift key down for safe boot, the mac will freeze on a blue screen when the grey screen disappears, and never proceed to login. Thought about replacing the disk but it's a lot of bother on these machines and there doesn't appear to be anything wrong with it??
Any ideas?
Can anyone think of a possible fix not listed above?

Hello chip
The only thing I see missing from your list is, have you disconnected all External HD's, iPods and other storage devices befor Starting up? Sometimes when the iMac has multiple storage devices connected the Startup Manager will get lost.
Also try going to: Startup Manager in System Preferences, select the Macintosh HD and restart the iMac..
Dennis

Blue Screen After Load, No Safe Boot, No Reinstall possible. Think you can figure this one out??

MacBook Pro "Core i7" 2.2 15" Early 2011
2.2 GHz Core i7 (I7-2720QM)
Intro.
February 24, 2011
Disc.
October 24, 2011
Order
MC723LL/A
Model
A1286 (EMC 2353-1*)
Family
Early 2011 15"
ID
MacBookPro8,2
RAM
4 GB
VRAM
1 GB*
Storage
750 GB (5400 RPM)
Optical
8X DL "SuperDrive"
Ok so i got this laptop in a few days ago here are the problems and the things i have tried. This laptop when it came to me did not have a hard drive, so obviously no OS. Upon installing a hard drive then trying to load Yosemite from a USB stick, I turn mac on, sleep light will blink 5 times then boot, Will come to normal gray screen then apple logo, will then load the OS install, but go straight to a blue screen with vertical lines. Tried different hard drive, tried different RAM sizes and speeds, tried different OS, tried CD instead. Have done numerous PRAM and SMC resets. trying Safe mode gets me a panic cpu 4 caller error then restarts. I have tried using a hard drive that had an OS already installed and will go straight to blue screen after loading. I have tried fsck -fy in single user mode. I do get that disk2s3 is write protected in single user mode, but im pretty sure that its the OS disk. I do not see a second hard drive in single user mode but i believe that because its not partitioned yet. Any ideas community?

Tried doing OS X lion by CD now, and will only get half way through load bar before the apple logo and loading bar disappears and then it will sit at a gray screen.

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Hi,
Thanks for reading my call for advise...
My system ran fine for about 10 months now. Since 1 week in 3D games I experienced some artifacts. A few days later artifacts appeared while playing movies in more than 100% of their original size. I did a winxp system restore... This seemed to be helpful for about two days.
Yesterday I booted my system....
Immediately my screen fills with strange blinking characters and lots of color. It looks like a &$%$^ fractal when my systems stops responding.
Only the top right corner is still readable. It shows the bios logo. There's nothing I can do. I can't go in the Bios-menu. My JLed shows it's busy with ...Boot Attempt - This will set low stack and boot via INT 19h.
Anyone seen this before? Please help me out.
Thanx!
Regards, Mark
Specs:
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- ATHLON64 (3200+)
- 1024 MB
- MSI NX6600-GT
- MAXTOR 160 GB (Sata)
- SHARKOON SILENTSTORM (370W)

I will search on int 19h....thanks.
My problem started before the bios-screen.
This is what I tried this evening:
- Disconnected all non-essential devices...no effect.
- Cleared the CMOS...system booted to OS! Screens still garbled!
- Put in an older graphics-card...No artifacts!
- Put my MSI NX6600GT (AGP) back in...screen grabled while booting. Once in OS everything
looks fine at first. Later I noticed some odd random pixels. Playing movies is working fine.
Playing 3D games results in all kinds of strange looking artifacts.
- Installed the latest NVidia- drivers...no effect.
Is my problem still MOBO related or Graphics Adapter?
Any further advice?
Thanks!

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http://www.everythingiphone.com/forum/windows-pc-and-iphone/blue-screen-error-wh en-i-plug-the-phone-into-my-xp-laptop-3038.html
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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.

My Macbook Pro (15" early 2011) got blue screen every i normally booted it. It only can enter the OS when it's in safe boot. Solution please.

My Macbook Pro (15" early 2011, Mountain Lion, but after reinstall i change it to snow leo) got blue screen every i normally booted it. It enter the OS only when it's in safe boot.
I've tried any solution that i got from the internet, such as:
-Reinstalling the OS X (normal install & clean install)
-Reset PRAM and SMC
-Repair Disk Permissions and Repair Disk from Disk Utility (the result is OK. There's no problem)
-Repair Disk Permissions manually (with Command + S at the beginning of booting)
-Checking Hardware from Application Installer DVD (result is OK)
-Checking from Mac Resource Inspector/MRI (result OK)
-Booting from Recovery Disk is same problem, blue screen
All of that solution is not working. My Macbook still got light blue screen and sometimes blue screen with lines after apple logo and spinning wheel is shown.
HDD is in good condition because when it's checked on the other macbook it can be booted. But if you must know, other HDD can't be booted when its plugged to my macbook (blue screen again). If i do safe booting, it works but can't play video and music also photobooth. I got confused with this case.
Any solution or comment? Thank you very much by the way

Hi. I'm not trying to rush things, you may have a different problem, but your issue looks quite familiar to me. I recently had a problem with the discrete graphics card (the Radeon GPU) due to overheating, all because a faulty application of the thermal compound in the factory.
In my case, the problem started slowly and intermittently, a few days after a gaming session (Quake 3) of about three hours (at the moment, I didn't realized that could be linked to the problem).
This issue is being actively discussed in another threads in this forum, but so far there's enough evidence that it's been causing similar problems for 2011 MBPs owners: screen corruption, black/blue screens, and in some cases, a total inability to boot. Some of the threads I'm talking about:
https://discussions.apple.com/message/13150366#13150366
https://discussions.apple.com/message/21110132#21110132
So far, and since the problem seems to affect only the discrete GPU (that's why you can boot in safe mode) a possible solution is to disable it by removing some extensions which prevent OS X from loading the Radeon drivers. This post describing the process (there are different files involved depending of your GPU version, so make sure you are moving the right ones):
https://discussions.apple.com/message/22521574#22521574
In the case your discrete GPU survived and is not permanently damaged, I personally had success by changing the thermal compound myself, which completely fixed the problem (at least for now). I've posted about it here:
https://discussions.apple.com/message/22630561#22630561
I hope you can find a solution, believe me I know the feeling when you see your expensive machine turning into a brick and it *****.
Good luck!

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).

'Famous' blue screen at startup AND safe mode boot failure

Dear all,
Two days ago, after installing the new Java update/airport update and restarting, I encountered a 'blue screen' on startup after getting past the mac symbol and swirling cog. I cannot say whether the updates were the cause (doubtful) of if my cheap USB mouse that was still plugged it caused it or whether i have the dreaded 'bad sectors.' The cause aside, here is what i've tried to fix the issue:
1) Disk Utility - Verification (OK'd) and Repairs (fine)
2) Disk Utility - Verification of Permissions (a few needed to be done) All repaired
-blue screen-
-Restart after period-
3) Rebooting in safe mode, removing startup items from the login items settings menu
4) Removing startup items from System/Library/StartupItems folders
5) Remove airport extensions (recent - date modified in list view)
(NB - safe mode i could say my desktop perfectl in original form and all files!)
-Restart-
-no longer able to start in safe mode-
-blue screen remains-
6)Single User mode -
resetting preference files (loginwindow.plist and windowserver.plist)
Finally system profiler from Tiger DVD states:
*Permissions repaired
*Dependency errors: com.apple.iokit.IOUSBFamily & com.apple.kernel.iokit no valid version found
*Integrity: kext has no receipt
I backed up most my data from the LAST crash, but recent music/1000 photos and others have been backed up altho i've been meaning to! Help!
I'M PANICKING now can no longer get in SAFE MODE!!
Please help Mac911!!!!
Charlie
G3 iBook 800mhz Mac OS X (10.4.6)

Update:
So, I managed to do ALL that you said, EXCEPT, the reboot and work fine business.
I created the admin account which works fine. So now I can see three user accounts (looks like there as already an admin type one).
The one I created works fine, only, I can only access/see the login screen through a safe boot, (otherwise blue screens...) . I can get into the admin account fine, but when restarting and logging in as my original user account it won't boot. Something is very wrong in MY user account. I think at this point my data there is still retrievable somehow for a backup, clean start. but i haven't reached that point yet.
Anyone have any clues what migt have caused the error in my user login?
One of the things I tried (too hastily now i admit) first was to remove the recently added updates from the extensions folder. has this exacerbated the problem? Can i put them back without logging in as me??
remember from my first post system profiler says software/extensions integrity 'kext has no receipt' and dependency errors: 'com.apple.iokit.IOUSBFamily and com.apple.kernel.iokit; no valid version found' - whereas in my newly created admin account it appears AOK.
is this the source?
any ideas anyone?
sorry lots of queries here but i am ever hopeful.....
All yours,
Charlie
G3 iBook 800mhz Mac OS X (10.4.6)

Hi i am having a big trouble. MY mac wont start past the gray screen. I tried starting on safe boot, single user user mode , recovery mode. Everything it gets stuck on the gray screen i even tried reinstalling it , same thing what should i do?

MY mac wont start past the gray screen. I tried starting on safe boot, single user user mode , recovery mode. Everything it gets stuck on the gray screen i even tried reinstalling it , same thing what should i do? it lets me reinstall sometimes Sometimes.... it is weird.

orshikhfromsc,
boot from the Mac OS X Install DVD that originally came in the box with your MacBook Pro (by holding down the C key as it starts up). When the desktop appears, select Disk Utility from the Utilities menu and erase your internal disk. After it’s been erased, reformat it. After it’s been reformatted, exit Disk Utility and reïnstall the version of Mac OS X from that DVD onto your internal disk. After that version of Mac OS X has been reïnstalled, boot from your internal disk and run Software Update to get it up-to-date within that version; that should allow you to redownload and reïnstall Mavericks, if desired. If Mavericks is reïnstalled, run Software Update again to get it up to date.
If you no longer have the two grey installation DVDs, you can purchase a replacement set from either Apple or iFixit.

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

Blue screen at start up Safe Boot however works...please help

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