Blank blue screen no login

When I start up my mac, it goes to the blue screen and never shows the login window. In verbose mode the screen flashes from blue to black displaying:
: Login Window Application Started
but never actually gets there! I've tried trashing my NetInfo but that hasn't seemed to work. Obviously I am working in Single-User mode to do this. Any suggestions, ways of trashing netinfo, ways to login!?!?

When I run the DU/fsck it always appears to be OK. But still no startup.
When I run sh /etc/rc
it all runs fine and then reports the following
: Couldn't read user-specified Computer Name; using default bMacintosh-000A957A2170b instead
: Couldn't read user-specified local hostname; using default bMacintosh-000A957A2170.localb instead
localhost /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ATS.framewo rk/Support/ATSServer: (-1) Cannot use ATS Persistent Store - switching to old FODB cache code
Workaround Bonjour: Unknown error: 0
Message was edited by: Andrea Sian

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Satellite L500 - blank blue screen after login to Win 7

Hi
I have this laptop and i can start up the laptop and it loads fine to the login page i then can login but when the screens opens after login it appears as a blank blue screen with the document folder open i have no background picture and no startup menu nothing else except the document folder.
From there i can access my files etc and anything else internet etc everything but i dont know how to get the screen back to normal.
If i go on background display i can see the image that should be on the background and change it but nothing happens on the full screen.
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If go into files and folders it shows me the icons on the desktop but all i see is this blank screen.
Any ideas please, if not would restore files work or full back up disc
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Hi
Check this:
Click right on the desktop and choose Personalize.
There you should check the area: Basis design and design with high contrast
Choose Windows 7 basic.
Then reboot the unit.
Usually this should help to get the Windows 7 common design and desktop settings.
But if this will not help then you could use an fast solution which would be a usage of the recovery disk of HDD recovery option.
This would format the HDD and would reinstall everything again

Blank blue screen on login page

I have the Satellite L875D-S7332. For the past few weeks I have had the problem of if the laptop goes into sleep mode, when I click somewhere on page to go from Date/time screen to login/password screen it stays blank and blue. Have to unplug and take out battery to get it restarted and onto regular login screen.

Satellite L875D-S7332 Specifications
Satellite L875D-S7332 Support Page
Try this:
1) Swipe in from the right edge of the screen, and then tap Search.
(If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then click Search.)
2) Enter cmd in the search box, and then right-click or press and hold Command Prompt.
3) Tap or click Run as administrator.
Type in the following command and then hit the 'Enter' key:
powercfg -restoredefaultschemes
Let us know what happens. Good luck.
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My OS X is die ?? Blank blue Screen at start up.....

one day in the middle of use my Macbook Pro all the suddenly the screen all get scremble. and the machine just hang can't even reboot.
SO i takeoff the battery to reboot, but now all i get is a blank blue screen after the Apple Logo.
i try boot in safe mode.
i go as far as the login screen after login then just OS x10.5 default wallpaper and nothing etc ?
so how can i make my macbook work again ?
i really don't want to reinstall the OS as the comp also get another bootcamp partition.
so any suggestion ?
thx

True, everyone should but not everyone does. Some people, newcomers especially, have the naive idea that when they spend a lot of money on something it should work, so they don't worry that any day could be their computers last. I guess we all have to go through something like this so we learn the lesson. I hope that in the future he'll just get an inexpensive usb drive and use time machine if he wants. It works pretty well.
In the meantime we have to get him going again with the least criticism applied. The page I referenced is nonjudgemental and, I thought, contained the advice you gave him in a somewhat neater format.
Peace, and thanks for helping a fellow Macintosher

Completely Blank Blue Screen after Laptop is woken up from Sleep

Initial State: 1) Laptop is ON
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Hi , Welcome to the HP Forums!
It is a superb place to find answers and suggestions! For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide. Learn How to Post and More I grasp that when you attempt to wake the notebook from sleep by moving the mouse or pressing a key, you are presented with your log on screen. When you click your username and before you enter the password it immediately presents a blue screen and becomes unresponsive. Here are links to two documents I believe will assist you. HP PCs - Troubleshooting Sleep and Hibernate Issues (Windows 8) HP PCs - Computer Locks Up or Freezes (Windows 8) To say thanks for replying please click the thumbs up button below. If this resolved your difficulty please let other people know the good news by selecting solution provided. This would allow it to be found with greater ease. Best of Luck!

Another blank blue screen at startup issue

Can anyone shed some light on this?
The iMac was operating fine up until a few nights ago. I had been using the machine all day without a hitch then in the evening tried switching to another user account and the system hung up stuck with the spinning pinwheel before login. I forced a reboot and got the blank blue screen.
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http://www.mikepipes.com/sketchbook/imac-1.jpg
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Present you case to Apple. If you don't get anywhere w/them then ask to be transferred (or call them yourself) to Customer Relations - 1-800-767-2775.
Otherwise, you will have no alternative but to take your computer to your local AASP.
If you have AppleCare, you can have the repair tech come to your home (under certain conditions). Read the small print in the AC booklet.
You can also check AASP or AASP's Outside of the USA to find a repair shop closer to you.
*PS Thank you for providing detailed info about your troubleshooting efforts. It was a great help.*

Blank blue screen and then computer crashes.

I'm having a lot of problems with Skype desktop on a Win 7 64 bit machine. It has worked fine on this machine until the past few days.
When I call someone the call connects but i get a blank blue screen and cannot interact with Skype. If I try to access other programmes the computer hangs (the call still continues) and I'm forced to do a hard shutdown.
Also when I go to check the settings it hangs when setting up the web cam.
I've unistalled and reinstalled Skype and the webcam software ensured that I have the latest versions of these and IE.
I have followed the instructions here http://community.skype.com/t5/Windows-desktop-client/Solution-for-empty-blank-login-screen/td-p/1008... and checked that my webcam is operating correctly here http://www.trust.com/en/faq/webcam.
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Solved!
Go to Solution.

Please, run the DirectX diagnostics tool (32-bit version).
Go to Windows Start and in the Run box type dxdiag.exe and press the OK button. This will start the DirectX diagnostics program. Run this diagnostics and save the results to a file. Please, attach this file to your post.
Be aware that you will have to zip this file before attaching it here.

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Hi Joe,
Thank you for your post.
From your description,
I see the current issue you are facing is: Windows Server 2008 displays blue screen on logon for all users, except for local administrators.
Please let me know if there is any update. Thanks for your time.
Here I’d like to know that the blue screen showed up after logging into the system, but with no desktop. Right?
Have you tried booting in safe mode? If not, please try it to see if that makes any difference. Based on your description, the issue happens to all users except for the
local admins, we suspect the issue might be GPO restriction related. If we are able to boot in safe mode, then please take the following steps to check the issue:
1. Delete the following registry key in safe mode after backing it up first:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Safer
2. Restart the server to check if the issue is solved.
Please let me know if there is any update after that. Thanks for your time.
Best Regards,
Sophia Sun
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Blue screen when login when try it recover a lock appear as login

blue screen when login when try it recover a lock appear as login

Interesting. I've never performed any of the steps documented above and all of my BIOS updates (and updates via System Update) have been applied with no issues. Perhaps I'm just living dangerously?
Several items, however, were omitted:
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Connected to AC supply
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These items have been true from day 1 of ThinkPads.
W520, i7-2820QM, BIOS 1.42, 1920x1080 FHD, 32 GB RAM, 2000M NVIDIA GPU, Samsung 850 Pro 1TB SSD, Crucial M550 mSata 512GB, WD 2TB USB 3.0, eSata Plextor PX-LB950UE BluRay
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Updated to 10.6.4 and have blank blue screen - what should I do?

I updated to 10.6.4 and now have a blank blue screen - what should I do?

Did you do the combo update?
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My mac book startup disk is full and when I start it, it give me a blank blue screen. I have tried the shift and I started in safe mode, and it gave me the stars screen. How can I delete files to fix the problem

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What does it mean when you computer crashes and when you turn it back on it shows you a blank blue screen with a little folder and a question mark in the middle?

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Blank blue screen on startup

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As a first step, check this link for system troubleshooting procedures and when doing so, follow all steps/instructions in the order provided.
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FIXED in 10.6.2! Yeah!

Blank Blue Screen

Whenever I start up my computer, I'm taken to the HP startup menu, but whenever I try to boot menu or boot recovery, it takes me to the blank blue screen. When I try crtl+alt+delete, a black screen flashes but takes me back to the HP startup menu. Please help.

If the memory and hard drive tests passed, then you may only need to reinstall the operating system. Unfortunately, if you can't get to the recovery partition through F11, you'll need to use external disks. I don't see that recovery disks are still available to purchase for this system. If you created a set when you got the system, you can use those. Otherwise you may need to purchase a retail version of an operating system.
I am an employee of Hewlett Packard.
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Blank blue screen no login

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