Startup screen issue

Hi everybody.
I am having this issue with my 2011 macbook pro 13", it occurred with hd, or ssd, with Mavericks as well as Yosemite:
apart from this the mac behaves normally with no issue.
Any ideas?

Update: issue disappears with an external display attached.

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Late 2008 iMac stuck in continual restart, startup screen issue

So, I come home last night and my iMac has shut itself off, not terribly out of the ordinary, so I start it up. However, the screen is covered in black blocks of pixels, with some color thrown in. The little wheel spins for about a minute I guess and then the next thing that pops up, although barely visible through the mess, appears to be the "new age" style kernal panic warning. It just cycles through this over and over without stopping, never getting any further than the first start up screen with the Apple logo on it. After hopelessly trying to restart a few times thinking it would go away, I hook it up in Target Disk Mode to my MBPro and start pulling stuff off the hard drive. Running Disk Utility on my iMac throws three errors, "incorrect number of file hard links," "invalid directory item count," and "the volume Hard Disk was found corrupt and needs repaired... Error: this disk needs to be repaired. click repair disk."
Originally I thought it was a graphics or logic board issue (I remember a similar looking display issue years ago on my G4 Cube), but now these errors make me think its a directory issue? I really don't know.
Here are a couple pictures of what I'm talking about:
http://bit.ly/12tFDM7
http://bit.ly/12N8goN
http://bit.ly/11JWMQo
sorry about the external links, pictures were too big to be embedded.
Cheers
Edit: I should mention this is a late 2008 iMac, running OS X 10.8.3

Run Apple Hardware Test in Extended Mode 3 times. If it reports errors take it in for repair, Apple does not publish the error codes so please do not ask what they mean. Only an Apple Store or AASP will be able translate them for you. You can find instructions for AHT at:
support.apple.com/kb/ht1509
Good luck.

Theres something wrong with my mac! Help! It said that it had a virus and then the browser wouldn't open! I tried to restart my computer but it wouldn't work, so I held down the power buttron. The startup screen is there but nothing else happens'!

So yesterday I went to do some work on my laptop.
My laptop is from about 2005-2006 so it's pretty knackered. Everything was going just fine but then my Avast! Security software notified me saying "VIRUS DETECTED" so I tried to go on the avast application but it wouldn't open. I tried to open my browser but the icon just bounced and stopped and them nothing happened after! So i clicked on the apple sign and clicked shut down. Then the system wouldn't shut down. So i held down the power button causing it to shut itself off. The next day I opened the laptop and turned it on. It made the healthy turning on noise and I can hear the fan working perfectly fine. The startup screen is showing. This is an all grey screen with the Apple logo in the middle and a spinning circle in the middle, the circle has been spinning for over 10 minutes now and I do not know what to do. I use this laptop for literally everything and I cannot possibly afford to replace this . I am hearbroken as I know that there is a possibility that I will no longer be able to use this laptop.
I would be extremely grateful if someone helped me as I am truly devastated. :(
HELP PLEASE

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MacBook Pro frozen on startup screen with progress bar and then it turns off

Hello, I have a MacBook Pro 15" of early 2012 with a i5 Intel, 4GB of RAM and a 500 GB HD.
I was installing the new suit of Adobe, when suddenly my Mac got frozen, vertical coloured lines appeared and the image on screen went distorted. I had to reboot the Mac by holding the power button until the screen turned off and when I turned it on, the lines appeared again and it itself automatically rebooted. Then the screen (now with no vertical lines) got frozen on the startup grey screen with the apple logo and the spinning wheel for hours with no response.
I tried to follow the steps of the official mac forums like verifying the HD with CMD+R and then Disk Utility, it says everything's fine; the same happens with CMD+S, no errors. I reinstalled Mavericks with the same CMD+R. I already reset the PRAM, SMC and performed a Safe Boot staring up in Single user mode and Verbose Mode and nothing, the same startup screen. I made too thins thing of holding shift until the progress bar appeared. Three days later (Today) I repeated the steps again and finally the verbose mode. Now, when I turn it on, the startup screen appears again (Apple Log and spinning wheel) with a progress bar. When it completes, the Mac turn itself off.
if you can help me, please. I don't know what else to do. The last thing is technical service.

Hi again ggt15,
You can find some more information about the Recovery Partition of your hard drive here:
OS X: About OS X Recovery
http://support.apple.com/kb/HT4718
It sounds like you might be trying to reinstall your copy of the operating system. If that's the case, you may also find some helpful information here:
OS X Lion: Reinstall Mac OS X
http://support.apple.com/kb/PH3878
Thank you for using the Apple Support Community. Due to the nature of your issue or question you may find more information by using another one of Apple's support resources - https://expresslane.apple.com/GetproductgroupList.action.
Cheers,
Braden

Boots to windows startup screen, flashes blue screen, restarts and repeats

HP ENVY H8-1414 Product #H3Z00AAR
Windows 7 Ultimate 64-bit
Alright, so here is my issue. I turn on my pc and it gets as far as the windows startup screen, flashes a blue screen error for about half of a second and then restarts it self. My HDD is recognized in the bios. Tried a memory test in diagnostics and it passes. Tried a hard disc check and it passes the SMART check but fails the Long DST with a failure ID of 0GF21L-0006LR-WPVX0K-61C703 (no idea if those a zeros or O's)
I've also tried the startup repair but it did nothing. So I removed the hard drive and tried to use it in a different PC but had the same issue so I figured the hard drive went bad. Then I tried formatting a spare hard drive and installed a fresh copy of windows 7 on it, tried it on a different PC and it works just fine. However, when I try to use that hard drive on the HP ENVY I get the exact same problem even though it worked just fine on a differenct pc.
I purchased this PC refurbished about 3 months ago, the warrenty just ended a week ago. There have been no hardware or software changes on it at all. This thing worked flawlessly last night... I locked the computer before bad and I woke up to this. No power outages over night or anything. It just doesn't make any sense.

Here are the specs for your HP ENVY h8-1414 Desktop Computer. According to the specs, this model came from the factory with Windows 8 installed. The "blue screen" and restart are normal for Windows 7, when it encounters an error, unless you have altered the default settings.
The LONG DST failure is indicative that the hard drive has failed or is about to fail. Unless the hard drive is moved to an identical or very similar computer, Windows will encounter a "blue screen. This is true with the original hard drive moving from the h8 computer to the other computer and the test hard drive from the other other computer moving to the h8 computer.
Try placing the "test" hard drive in the h8 computer and installing Windows 7 from a DVD or USB stick. If you have any problems, please post back with full error messages and screen shots. Also indicate what stage of the install Windows 7 was doing tat the time.
Please send KUDOs
Frank
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Startup Screen Pixelated - I really need help on this one.

15" Macbook Pro - Spring 2011
My startup screen sometimes would be pixelated with the Apple logo and then would go to grey screen and do nothing... then I would be forced to shut down and power it up again. On two occasions, the bootup would have stripes on it. See photo.
And then the occasional lockup while working on something would happen and I was forced to power it down. This would happen periodically and not every day.
So... I had this problem a couple of months ago (for several months) and the Apple store kept my Macbook Pro for a few days and said there were reported no problems. They were clueless as to why I had the above screen show. They said... maybe it is a bad installation of the OS and that it got corrupted.
So a couple of months later and I am now I am having the same issues again. But this time, I had bought another HD and installed Mountain Lion on it... and I have it connected via USB. I had used it several times before last night when I held the option key down to choose my startup disk to be the new HD via USB. Then I get this pixelated screen again, but this time it was at the startup disk screen. See Photo.
It's like you have a car problem and you take it in to the shop only for it to not malfunction... I really need some guidance on this one. My AppleCare warranty just expired (was valid during my visit to the Apple Store)... And I am not a happy camper... I always use macs... and I teach everyone who has them how to use them.
So to be clear... This is the same internal HD that I had when I took it to the Apple Store. (Lion)
I installed Mountain Lion on a new HD connected via USB and have worked off of it for a few days with no problems, choosing it as a startup disk.
Last night booting with the option key held down I get this pixelated screen, whereas before it was never pixelated holding the option key down.
So I have a couple of questions:
Is the Boot Screen above run by the motherboard or the HD? If it is the MB, then I need to talk with Apple again.
Does anyone have any clue what is happening?I have reset my PRAM and switched out my RAM.
If this screen is run by the same HD in the laptop, then maybe I just need to take it out....?
I would appreciate any genius expertise. I am a little frustrated that I am having this problem and cannot narrow it down. I use my laptop extensively for presentation, graphics, and teaching and now I am afraid of it.

Your 10.7 EFI may be corrupted.
The way a Mac works is EFI is updated via Software Update, it's written to the OS X partiiton, then gets loaded into the hidden EFI partition and read/used upon the second boot.
So it takes two reboots to load EFI and goes into the EPROM boot memory.
My terminolgy might be inaccurate as I didn't take a Apple course for certification, but I understand a little about the boot stage from my Linux on Mac experience.
If your 10.7 EFI is corrupted on one drive, and you've got a 10.8 clean EFI on another, then it takes two reboots from the same drive to clear and use it's EFI into boot memory.
So if you've booted 10.7, then option booted to use 10.8, it could be the corrupted 10.7 EFI still in memory.
The way to fix the corrupted 10.7 EFI partition is a total wipe and format of the entire drive to catch the hidden EFI parition, then install 10.7 fresh and update.
Of course Apple made this difficult with Recovery Partition which won't allow a complete drive erase.
However you can do this
http://osxdaily.com/2011/08/08/lion-recovery-disk-assistant-tool-makes-external- lion-boot-recovery-drives/
There is also a way to install EFI firmware from a cd, however I don't know where it goes, reboot the 10.7 drive twice anyway
https://support.apple.com/kb/HT1237
http://support.apple.com/kb/DL77
Since your out of warrantly, you might want ot just go ahead and repalce the internal drive and see if that fixes the problem.
http://eshop.macsales.com/installvideos/

My macbook pro went from startup screen to grey vertical stripes

my macbook pro went from startup screen to grey vertical stripes with a bit of flashing. Force quit twice and it is still doing it. Had a bit of problem last time I started it with flashing screen, but it settled. After leaving it on screen went black (as usual) and on waking had desktop up but continued to flash. Any suggestions?

Hi there Lochside,
You may find the troubleshooting steps in the article below helpful.
Apple computers: Troubleshooting issues with video on internal or external displayshttp://support.apple.com/kb/ht1573
-Griff W.

Mac freezes on the apple startup screen?

My iMac 24 inch freezes on the apple startup screen, then it takes along time for the cog wheel to start turning, and then that's all you'll get untill you switch off. I've fixed permissions and erased and reinstalled but still same issues, any ideas for what to do next????

If you can afford to erase everything again...
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. (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 Erase 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. Highlight the drive, select Partition Tab, then Format type... MacOS Extended Journalled, select the Security Options button, choose Zero Out Data, Erase... after completion hopefully you'll be able to get a good install.
Or...
Boot off your *original* Install Disk while holding down the *d key*, (not c key), then run the extended Apple Hardware Test. Some disks require you to use the Option key at bootup to select AHT.
The Memory test can really only be trusted if it finds a problem, not if it doesn't find a problem.
Memtest OS X...
http://www.memtestosx.org/joomla/index.php
Rember is a freeware GUI for the memtest ...
http://tech.kateva.org/2005/10/rember-freeware-memory-test-utility.html

Mbp weird startup screen?

just got my new 2.16ghz 17"mbp - and i'm a bit concerned about the startup screen. The very first screen (which on all my other macs is a clean mid grey with a very clean logo and spinning clock) is very very noisy, with a logo that looks like a rats been gnawing at it. There are 3 or 4 very obvious vertical blue lines and the rest is a mass of vertical banding and smearing.
And thats it...once the blue screen appears, the lcd is clean and crisp and how i expect it to look. I don't seem to have any of the other problems that many of you have.
Am i being overly concerned here, or is this indicative of possible problems in the future?
Is anyone else seeing this on their macs?
slightly concerned
Adam

Hi Adam,
Just received my MP15" yesterday. First time I start it up, I had the same issue than you: the startup screen was very noisy with some kind of squares moving around when I was moving the pointer. I thought it was happening because it was the first time that I was starting the computer. The blue screen appears and then everything went fine until today... After minutes of unactivity my screen went off, when I tried to use again my computer, the screen went on but with the same noisy pattern that I had on the startup screen... I could not see anything, I had to shut down the computer. I tried to restart: same problem, even worth than before! Finally, after 1 hour of unactivity, I tried again and it worked. I will bring my mbp to the apple shop tomorrow and see what they have to say. Keep you in the loop.
Chris
MPB15" Mac OS X (10.4.7)

T400 is Stuck on Thinkpad Startup Screen

Had the laptop for 11 months no issues, I woke up to find the computer stuck on the startup screen. Tried rebooting, took out the battery, tried it pluged in, unpluged and it keeps stopping at the startup screen. Any suggestions?
Solved!
Go to Solution.

Hello mate,
Unplug the AC adapter and take out the battery.
Then, you push the power button 10 times in a row at one second intervals.
Next, you push and hold the power button for 30 seconds.
Then you put the battery back in and push the power button to turn on the computer.
See if it works.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information on it.
ThinkPad T510 4313-CTO Windows 8 x64 - Intel Core i7-620M - NVIDIA NVS 3100M - 8GB RAM - 240GB SSD- Intel Centrino Ultimate-N 6300 - Gobi 2000.
ThinkPad Helix 3697-CTO Windows 8.1 x64 - Intel Core i7-3667U - Intel HD Graphics 4000 - 8GB RAM- 256GB SSD - Intel Centrino Advanced-N 6205 - Ericsson C5621gw

IPad 3 - PS Touch locked up at startup screen...

I've seen other posts about this but have not come across any fixes for this problem short of replacing the machine with a new one. It's been working fine right up until this morning when I tried to open it, first time using it since a couple of days and now I just get the startup screen.
Has anyone found any other fixes for this issue?
Thanks in advance...

Glad to hear that worked. Thanks for posting the solution, we can suggest it as something to try if we hear of others having the freeze at launch.
-Dave

After Updating OS X from 10.8.2 to 10.8.3, Startup screen always crashes

After Updating OS X from 10.8.2 to 10.8.3, Startup screen always crashes. I also submitted to Apple bug reporter with the Bud Id#13438371
Steps to Reproduce:
1-Press the startup button.
2-Loading circles appears on the screen,
3-Wait more than usual,
4-Then, before Login window (only one user and its admin login) appears, screen view crashes for a few secs.
5-After few secs screen view back to normal and login window appears.
Please check for more details about startup screen crashes
I uploaded to youtube. link is below;
http://youtu.be/-0Tk7OM7Qf8
Has anyone come across this issue?
Thanks in advance,

Make a "Genius" appointment at an Apple Store to have the machine tested.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

Elite pavilion m9040n won't get past startup screen

For the past few weeks, my computer has been unable to load past the initial startup screen( blue hp screen) . The screen goes to a black screen with a blinking cursor and then after hearing what sounds like a click and a loading sound it restarts over and over. After several attempts running startup repairs , I am able to get to the hone screen however it freezes every few minutes or so. I'm inclined to think this may be a hdd issue because I have been receiving the black screen message : A disk read error has occurred. Press ctrl+alt+delete to restart.
I should add that I haven't changed any hardware or software prior to this problem.
Any help would be appreciated

Sosa70 wrote: For the past few weeks, my computer has been unable to load past the initial startup screen( blue hp screen) . The screen goes to a black screen with a blinking cursor and then after hearing what sounds like a click and a loading sound it restarts over and over. After several attempts running startup repairs , I am able to get to the hone screen however it freezes every few minutes or so. I'm inclined to think this may be a hdd issue because I have been receiving the black screen message : A disk read error has occurred. Press ctrl+alt+delete to restart. I should add that I haven't changed any hardware or software prior to this problem. Any help would be appreciated
Hello Sosa70, When the system completes the POST (Pre Operating System Test) successfully, it turns control of the system over to the operating system, and you would see the black screen with the blinking white cursor.
Sometimes when the operating system has become corrupted, it cannot boot into the Windows desktop.
It is also possible that the hard drive itself has become faulty. Since you mentioned you performed the hardware test and found no errors, you may just have a corrupted operating system.
Please click the White Kudos star on the left, to say thanks.
Please mark Accept As Solution if it solves your problem.

Mac Mini hangs on startup screen

Need help, my mini hangs on the startup screen the dial benieth the apple logo spins, but nothing else happens. I was having difficulty connecting to the internet before the issue started, tried to open internet connect, when it wouldn't open I tried a restart, now all I get is the startup screen.
I'm really concerned with un-backed up data, any ideas of how to get in and backup before making any drastic changes?
I can take to the apple store tomorrow, so I don't want to do anything that would potentially lose data or make things worse.
Please help if you know what is going on. Thanks.

Whatever else, do not, at this time, attempt an erase and install, since this would delete all your existing data in the attempt to get a bootable system back in operation.
Since your primary concern is your data, backing this up is the first priority. To do this, you could use firewire target disk mode if you have another Mac available (as previously suggested). However, if you do not have another Mac to hand for this, the safest way to deal with the situation with least risk to existing data is to use an external drive, preferably connected via Firewire, and install MacOS on that, then boot the system to it by holding the Option key down during startup. That would give you a booted system from which you can then examine the internal drive.
There is a possibility that your internal drive will then not be visible, which would indicate either serious directory damage or a hardware issue. Disk Utility can be used to check the drive if it is visible, and even attempt a repair if it is. However if it fails, you will then need to use commercial software such as ProSoft Data Rescue II (an excellent data recovery application) to retrieve data from the drive, or Allsoft's DiskWarrior to attempt a repair on the drive, being aware that even though often effective, there is a risk with tools such as DiskWarrior that in using them they can effect a repair on the drive that makes it viable again, but loose data in the process, thus backing up or retrieving data first is usually the wisest course.
As to the drive itself, it is possible the boot issue being experienced is due to a hardware problem with the drive which would mean a replacement is needed. This is not all that common however. It is more likely to be the result of directory structure errors, in which case Disk Utility or DiskWarrior may be able to resolve the problem, leaving the drive functional without any further action or with little more than an archive and install. However, not all such errors are repairable, and hence an erase and install may be needed.
One way or another, do not attempt to write anything to the drive or change any data on it until you have either retrieved/backed up your data, or decided not to do so. If the data structure is damaged, any and every attempt to modify the data on the drive can render it harder to recover data from it intact.

Freezes on startup screen with new Battery

laptop works fine with old Battery just battery will no longer hold a charge installed a new Battery freezes on startup screen ran battery test ok got a 2nd new Battery using the numbers off the old one same thing followed hp noteboook pcs testing and calibrating the battery everytime the first part says battery ok the 2nd part says na. reinstall old battery laptop works fine

Thank you for visiting the HP Support Forums and Welcome. I have read about your Compaq-Presario and having an issue with the New battery. Here is a link to test and calibrate the battery.
Plug the power adapter directly into a functioning wall outlet. Do not plug it into a power strip, surge protector, or secondary power source as this could cause and issue.
If that does not help try the Microsoft ACPI-Compliant Control Method Battery is basically the driver that communicates between the computer and the battery. There is a chance that it is corrupted. It is reading the battery level wrong, so the computer thinks the battery level is higher then what is actually is, so when it runs out of juice it shuts down.
Step 1. Go to Device Manager
Step 2. Select Batteries
Step 3. Right click the "Microsoft ACPI-Compliant Control Method Battery" that is listed there
Step 4. Click Uninstall
Step 5. At the prompt put a check in the box to remove the current driver
Step 6. Shutdown the computer
Step 7: Remove the battery for minute and then put it back in
When the computer comes back up it should automatically find the driver.
Step 8. Go to Device Manager
Step 9. Select Batteries
Step 10. Right click the "Microsoft ACPI-Compliant Control Method Battery" that is listed there
Step 11. Click "Search automatically for updated driver software"
Do the same thing with Microsoft ACPI-Compliant Embedded Controller.
Hope this helps.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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Startup screen issue

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