Yellow start up screen under OS 10.9.3

Since I have installed OS 10.9.3 I have a startup problem. Computer starts with a yellow screen for several seconds. Does anybody have an idea, what this means? Thank for every post.

Some of the Display settings are stored in PRAM. Reset PRAM.
Reset PRAM: http://support.apple.com/kb/PH14222

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My iPad shows a text box on my start up screen iCloud backup stating that the iPad has not been backed up in 2 weeks etc and i press "ok" to acknowledge but it will not erase and I cannot turn the pad off by the main on off switch - cannot use pad!!

My ipad shows a text box on my start up screen stating icloud backup - this ipad hasnt been backed up in 2 weeks . backups happen when this ipad is plugged in, locked and connected to wi fi and ok under - so press ok but cannot remove the box or back to my home screen and cannot turn off the ipad from main switch at top of pad? Can anybody help? Thanks

Perform a Reset...
Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
http://support.apple.com/kb/ht1430

Why do I need to start up Screen Sharing twice to get it to work ?

I have an Intel Mac Mini connected to my TV, so I started using Screen Sharing from my MacBook Pro to be able to work on it when others were watching TV.
Both Macs used to have OSX 10.5 Leopard, and everything worked fine.
Now they both have OSX 10.6 Snow Leopard, and whenever I startup Screen Sharing, the connection-windows asking for my Name & Password comes up properly, but then it hangs... it stays in "Connecting..." for ever (litteraly).
I'm not able to quit or force-quit the connection-window by then, so it stays in view...
(Screen Sharing isn't even listed in the force-quit list as a running app)
but...
when I just try Screen Sharing again, I get connection immediately and it seems to work flawlessly...
...it's just that the connection-window is impossible to quit...
it stays in view an is really annoying...
this looks really crappy...
can anyone tell me why I do need to startup Screen Sharing twice to get it to work ?
Is this a bug ?
(If so : please apple fix this a.s.a.p.)
...or am I doing something wrong ?
(if so : what am I doing wrong ? and how can I get rid of this annoying screen ?)
Thank you for your kind reply.
Toon.B

it's October and this really annoying problem still exists !
the unnamed screensharing-loginwindow keeps "Connecting...", and I'm unable to shut it down...
...even after my screen sharing session is over
...even force-quitting is impossible (this 'app' just isn't showing up in the force-quit-window...)
please Apple - fix this ; under 10.5 it was working great !
Does anyone have any idea how to fix this ?
(besides restarting my Mac)
Thanks !
Toon.B

I clicked on Full Screen under options and now I cannot get it to return to the regular screen. Please help. I have Windows 7, Acer Laptop Aspire.

Under original start up screen with Firefox in orange at the top, I clicked on options and clicked on Full Screen. Now I cannot get it to return to the original state. What do I do? Thank You.

What happens if you press the F11 key?

My computer won't load pass the grey start up screen

    MacBook pro won't load pass the grey start up screen?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
     a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 3
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 4
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 5
Boot in safe mode. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 6
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 7
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 8
Repeat Step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
Step 9
This step applies only to older Macs (not current models) that have a logic-board ("PRAM") battery. Both desktop and portable Macs used to have such a battery. The logic-board battery is separate from the main battery of a portable. A dead logic-board battery can cause a boot failure. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 10
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested. If you can't get to an Apple Store, go to another authorized service provider.

Frozen on Start Up Screen - Please Help (Urgent)

I've had my mac Mini for a little over a year now and have not once had a problem with it. When I came home from work yesterday there had been a powercut and naturally my mac mini had switched off. When i tried to turn it back on it made the chime and went into the start up screen (with the mac logo and the little spinning thing) i was waiting half an hour for it to get off this screen but it did not. When i restarteed the computer i had the same problem, i left it on over night to see if it was just going to take time to load but by this morning nothing had changed (same loading screen on moniter).
I Have tried to reset the PMU (or whatever its called) and i still have the same probelm.
Help desperatly needed as the computer has two years worth of school work and writing on it not to mention music and movies than ive made for my uni course!
Many thanks in advance
Henry

OK, so it looks like when the mini crashed, it ended up corrupting the drive directory structure - possibly it was in the middle of a write operation when the power failed.
The good news is that rarely does this cause a hardware fault, so there is like as not, nothing wrong with the system that can't be fixed.
However, the bad news is that without a disk recovery utility, such as DiskWarrior or Tech Tools Pro, neither of which are absolutely certain to work) the only way to get the system back under normal control is to reformat the drive, since this will rewrite the directory structure. And of course reformatting will loose your data. In this situation, simply trying to reinstall MacOS won't work since the system has errors on the drive that will prevent data being safely written. Also, any and all disk write activity risks overwriting your data since the faults generally will indicate that MacOS won't know for sure where your data is, thus make it possible to write over the top of it.
Since iTunes won't allow you to download again, and it appears you don't have any backups, I think you have few options to consider:
1 - buy a copy of DiskWarrior or Tech Tools Pro and try and recover the drive that way. The disadvantages are that this will cost you some money, and there's no certainty it will work, but if it does, the advantage is that you could restore your drive (and thus system) to full operational status with little effort.
2 - get hold of (meaning buy or borrow from someone else) an external firewire drive onto which you can install a copy of MacOS with which to boot your system. Once booted, then use the drive to copy off your files, then once backed up, do an Erase and Install using your original install disk to reformat the hard drive and put back a working copy of MacOS. Once done, you can then copy your files back from the external hard drive.
3 - if you have another Mac available to you, connect your mini to it with a firewire cable and start it up holding the T key to put it into firewire target disk mode. It should then appear on the other Mac's desktop as an external drive and thus allow you to access your files and back them up.
Beware however that if the directory structure on the mini's hard drive is messed up, there is no certainty that you can recover all your data since the data may not be entirely intact, or indeed, in the locations the directory structure tells the system it is in. As a result, the best option from the 3 above is the first - to try and repair the directory using one of those two utilities.

Mac book pro stuck at start up screen

Mac book pro was running slow so restarted it and now can't get past start up screen. Any tips?

Force Quit (under the Apple menu).
Can you get any MS Office app to open without freezing? If so, you should go under the Help menu of any Office app and select "Check for Updates" - the latest version is 14.3.9.
You might also want to try holding down the option key when you next try to open Outlook - this will force a rebuilding of your user database. You may have a problem there.
If all else fails, you can always trying uninstalling Office 2011 (http://support.microsoft.com/kb/2398768?wa=wsignin1.0) and reinstalling it...
Clinton

TS2570 My 2010 MacBook pro gets stuck at the apple start up screen

I think I've tried almost everything possible and my computer gets stuck at the apple start up screen with the loading bar under every time I shut the computer down and restart it. I've tried all the resetting, trying to do the apple hardware test (which never worked), and so many other things that I can't even remember everything that I've tried. Could someone out there possibly help me?

Yes. I turn it on like I normally would. I hear the chime and everything. It looks like it wants to start up and it acts like its loading. Then it just gets stuck when the loading bar gets to right about the middle.

When i turn my computer ON the grey start up screen looks corrupted

Corrupted might be an overstatement, but when i turn my computer on the grey start up screen with the white apple logo and the loading bar appears at an inferior resolution than the screen, and it's not even well proportioned because there's a black bar on each side. I have no idea why this happens or if it's even normal, mostly because i'm a recent mac user. I have a non-retina mid 2012 15" macbook pro, 1440x900 screen.
i've also been having problems with the wi-fi connectivity. it looses connection more often than i would like, and sometimes i have a "Connection Timeout Occured", i have no idea why, but i've seen people complaining about it.
thanks

Your GPU could just be 'hiccupping' on start-up - if I were you, and since you're still under warranty, I would take the machine to your local Apple Store and have them run diagnostics to see if there's really anything wrong with the GPU.
As to your wireless problems - so many things to trace down. Start by running the "Wi-Fi Diagnostics.app" found in System>Library>Core Services and see what those reports show. It could be anything at this point.
Clinton

About two weeks ago, it would randomly shut off. It would restart fine, but shut off sooner. Sometimes, it wouldn't even restart. Now, it's at the point where when I power it on, it rarely restarts past the white apple start-up screen. mbp mid 2012 i7

About two weeks ago, it would randomly shut off. It would restart fine, but shut off sooner. Sometimes, it wouldn't even restart. Now, it's at the point where when I power it on, it rarely restarts past the white apple start-up screen.

Backup in case your disk is failing.
Start up in Safe Mode; http://support.apple.com/kb/PH14204?viewlocale=en_US
If it boots reliably in Safe Mode then it is probably a software issue.
Reset PRAM: http://support.apple.com/kb/PH4405
Boot in Recovery Mode. (Hold down the Command (⌘) and R keys as your computer restarts.) Run Disk Utility. Click on the upper left system disk icon. Does S.M.A.R.T. report “Verified”? If not the disk is failing and will need to be replaced. Click on the icon underneath and indented to the right, usually called “Macintosh HD”. Repair Disk. It should finish normally with a green OK message. If it does not try to repair it again.
If it will not finish with the green OK message then use Disk Utility to erase the drive and then reinstall OS X. (Be sure you have a backup before erasing the disk. Post back if you need instructions on how to do that.)
If it repaired all errors and is still not booting normally, reinstall OS X.
If it is still sick after all these steps then the disk probably needs to be replaced. You can do that inexpensively and fairly easily yourself or take it to an Apple store for them to do it for you at a higher cost. If it is still under warranty or AppleCare have Apple do it for you for free. Post back if you need instructions on replacing the disk. You may want to have Apple check the health of the system and disk before replacing it yourself.
Message was edited by: Dibenkorn

HP Envy 14 - black screen after start up screen when trying to recover the system

I have a HP Envy 14 and months ago I got the message "Hard Drive failure imminent".
Well, the HD finally stopped working and I got a Kingston ssd hyperx 240gb to replace it.
I have the HP recovery disks, so I tried to recover my system with them. The 6 disks are used to creat an image and then I have to click "continue" in order to re-initiate the sytem. Then, I get the usual HP start up screen, so I hit enter. Then, I get a black screen (screen is on) and nothing happens. I've done this 4 times and always get the same black screen at the end.
Any suggestions to solve this problem?
Many thanks.

Hi
At this point you may consider contacting Kingston to ask them why your SSD is not running after POST when clearly Windows is installed .
Checkurtech
****Click the White Kudos star to say thanks****
****Please mark Accept As Solution if it solves your problem****

I am experiencing some major problems with my MacBook Pro. I have had some issues with it turning on/off at random times, but today, when starting, I get the grey start-up screen and a recovery bar. After filling in approx 1/4 of the way, the machine dies

I am experiencing some major problems with my MacBook Pro. I have had some issues with it turning on/off at random times, but today, when starting, I get the grey start-up screen and a recovery bar. After filling in approx 1/4 of the way, the machine dies. After starting it in recovery mode, it will not allow me to download OS X Mavericks- it says the disk is locked. Any ideas? I do not have a back-up and do not want to erase everything before I have explored my options. Help?

try forcing internet recover, hold 3 keys - command, option, r - you should see a spinning globe
most people will tell you to do both pram and smc resets (google) and if you still have issues, either clean install (easy) or troubleshoot (hard)

HT4061 ipod 4th generation stuck on start up screen, won't do anything (the black screen with the silverish apple). Help?

This morning, i tried turning on my ipod (4th generation) and it is stuck at the black start upp screen (the screen that has the siverish apple when you have first turned on your device). It has been stuck like this for about a half an hour now, and I'm not sure what to do. This would be the second time in at least three months I have had problems with it (around December it went into recovery mode and i had to reset it to the factory settings). Is there anyway I can handle this at home, or do i have to go into an apple store to have this fixed? Also, I plugged it into my computer and it didnt show up in itunes like it did last time. Thanks! (I'm pretty sure its the IOS 6 because i have not updated it since then).

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

I need to reinstall my operating system for 10.5 after seeing a file folder and question mark flashing on my start up screen. Can anyone help me with this?

I need to reinstall my operating system for 10.5 after seeing a file folder and question mark flashing on my start up screen. Can anyone help me with this?

Hello,
That means it can find the Hard Drive, or can't find the things needed for booting.
See if DU even sees it.
"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 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, (not Repair Permissions). 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.)

My macbook wont start the screen turn blue and stay like that for hrs. It only work when i use safe mode, i try to use disk utilities to fix it but the disk utilities keep saying error and a bunch of other stuff. I dont the cds the comp came with, help.

my macbook wont start the screen turn blue and stay like that for hrs. It only work when i use safe mode, i try to use disk utilities to fix it but the disk utilities keep saying error and a bunch of other stuff. I dont the cds the comp came with, help. i've tried the command s command p command v but nothing i've tried to the safe mode then a quick restart but nothing
disk utility give me this:
Process:         Disk Utility [371]
Path:            /Applications/Utilities/Disk Utility.app/Contents/MacOS/Disk Utility
Identifier:      com.apple.DiskUtility
Version:         11.5.2 (298.4)
Build Info:      DiskUtility-2980400~60
Code Type:       X86-64 (Native)
Parent Process: launchd [86]
Date/Time:       2013-11-05 03:29:41.247 -0500
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version: 6
Interval Since Last Report:          9522 sec
Crashes Since Last Report:           29
Per-App Interval Since Last Report: 981 sec
Per-App Crashes Since Last Report:   25
Anonymous UUID:                      F6B8E263-76C8-4C7D-AA58-48134BF4BA78
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000020
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0   libobjc.A.dylib                         0x0000000100c62fbc _read_images + 312
1   libobjc.A.dylib                         0x0000000100c79721 map_images_nolock + 1266
2   libobjc.A.dylib                         0x0000000100c62761 map_images + 115
3   dyld                                    0x00007fff5fc039c5 dyld::notifyBatchPartial(dyld_image_states, bool, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)) + 853
4   dyld                                    0x00007fff5fc0c849 ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, ImageLoader::RPathChain const&) + 201
5   dyld                                    0x00007fff5fc04d54 dyld::link(ImageLoader*, bool, ImageLoader::RPathChain const&) + 118
6   dyld                                    0x00007fff5fc08f7c dlopen + 490
7   libSystem.B.dylib                       0x0000000100a14e40 dlopen + 61
8   com.apple.CoreFoundation                0x0000000100d78ef7 _CFBundleDlfcnLoadBundle + 231
9   com.apple.CoreFoundation                0x0000000100d77e97 _CFBundleLoadExecutableAndReturnError + 1191
10 com.apple.Foundation                    0x0000000101008355 _NSBundleLoadCode + 638
11 com.apple.Foundation                    0x0000000101007c78 -[NSBundle loadAndReturnError:] + 742
12 com.apple.Foundation                    0x000000010101960c -[NSBundle principalClass] + 38
13 com.apple.framework.DUSupport           0x0000000100082080 -[DUModuleManager(_private) findDUModules:] + 405
14 com.apple.framework.DUSupport           0x0000000100081ed9 -[DUModuleManager orderedModuleListOfModules] + 40
15 com.apple.DiskUtility                   0x0000000100006082 0x100000000 + 24706
16 com.apple.DiskUtility                   0x0000000100005f59 0x100000000 + 24409
17 com.apple.AppKit                        0x0000000101444625 -[NSWindowController _windowDidLoad] + 538
18 com.apple.AppKit                        0x00000001013e1f77 -[NSWindowController window] + 112
19 com.apple.AppKit                        0x00000001015f61d9 -[NSWindowController showWindow:] + 47
20 com.apple.AppKit                        0x00000001015c7c5c -[NSDocument showWindows] + 98
21 com.apple.AppKit                        0x00000001015c64bb -[NSDocumentController openUntitledDocumentAndDisplay:error:] + 340
22 com.apple.AppKit                        0x00000001014f7b44 -[NSDocumentController(NSInternal) _openUntitled] + 111
23 com.apple.AppKit                        0x00000001014f79ab -[NSApplication _doOpenUntitled] + 257
24 com.apple.AppKit                        0x00000001014f733b -[NSApplication(NSAppleEventHandling) _handleAEOpen:] + 185
25 com.apple.AppKit                        0x00000001014f6fd9 -[NSApplication(NSAppleEventHandling) _handleCoreEvent:withReplyEvent:] + 77
26 com.apple.Foundation                    0x0000000100ffd0d6 -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:] + 360
27 com.apple.Foundation                    0x0000000100ffcf06 _NSAppleEventManagerGenericHandler + 114
28 com.apple.AE                            0x0000000104d7332b aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned int, unsigned char*) + 162
29 com.apple.AE                            0x0000000104d73224 dispatchEventAndSendReply(AEDesc const*, AEDesc*) + 32
30 com.apple.AE                            0x0000000104d7312b aeProcessAppleEvent + 210
31 com.apple.HIToolbox                     0x00000001028a0619 AEProcessAppleEvent + 48
32 com.apple.AppKit                        0x00000001013fc095 _DPSNextEvent + 1191
33 com.apple.AppKit                        0x00000001013fb801 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
34 com.apple.AppKit                        0x00000001013c168f -[NSApplication run] + 395
35 com.apple.AppKit                        0x00000001013ba3b0 NSApplicationMain + 364
36 com.apple.DiskUtility                   0x0000000100002009 0x100000000 + 8201
37 com.apple.DiskUtility                   0x0000000100001db8 0x100000000 + 7608
Thread 1: Dispatch queue: com.apple.libdispatch-manager
0   libSystem.B.dylib                       0x0000000100a27c0a kevent + 10
1   libSystem.B.dylib                       0x0000000100a29add _dispatch_mgr_invoke + 154
2   libSystem.B.dylib                       0x0000000100a297b4 _dispatch_queue_invoke + 185
3   libSystem.B.dylib                       0x0000000100a292de _dispatch_worker_thread2 + 252
4   libSystem.B.dylib                       0x0000000100a28c08 _pthread_wqthread + 353
5   libSystem.B.dylib                       0x0000000100a28aa5 start_wqthread + 13
AND MORE TOO MUCH TO COPY N PASTE HELP PLEASE!!!!!

Reset the PRAM
Reinstall the operating system from the dvd (you will not loose your data)

Yellow start up screen under OS 10.9.3

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