HT1533 Help my iMac doesn't start from the white screen and apple and whirring gear icon.

Help! My IMac doesn't boot up ...just a white screen, apple and whirring gear. I tried turning it off and on and then turning it on while holding down the shift key but nothing.

Could be a HD failure. Gina please do 2 things, first is when you post it's imperative for us to know some things about your system so we can diagnose properly. We need to know what iMac you have, some basics about how it's configured and how much RAM is installed and most importantly the version of OS X installed. Without those basics it's very difficult. To get you started though, please carefully read and methodically follow Apple's instructions in Gray screen appears during startup

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My imac won't load from the white screen with the logo on? What shall I do?

My imac won't load from the white screen with the apple logo and buffering sign? What shall I do..

Try any of the steps suggested in this article that you haven't already tried:
http://support.apple.com/kb/TS2570?viewlocale=en_US&locale=en_US

My iMac does not move beyond the white screen with apple logo?

When the iMac turns on it does not advance it's start up beyond the 'White Screen' with the apple logo at the center.

the following article addresses the mac booting to gray screen issue you described:
http://support.apple.com/kb/TS2570
you should get resolution from this, good luck!

Help!! - I am faced with the grey screen and spinning gear!!

Hi guys
I have an intel-based imac and when i performed routine updates on it, it took long to switch off so i manually turned it off with the button. Normally this gives no problem, but this time it refuses to go past the grey screen with the apple logo and spinning gear. I have tried many of the fixes but to no avail...does anyone have any step by step instructions/suggestions...I cant get to any of my uni work. I tried disk utility and it said my hard drive is fine, yet when i restart im back to the grey screen!
Please help, I cant access any of my files and cant risk having it wiped!!!
Thanks in advance - sorry if this might be in the wrong section!

I had the same issue, and I had recently backed-up my files (mostly because the mac was acting wonky before this even happened), so I did an erase and install. Then I ran through all the software upgrades and installed all of them. When I did a required restart (for the Mac OS X 10.4.11 update) it went BACK to grey screen with spinning ball. Talk about frustrating!
I think there is something weird going on with the iTunes update and the Mac OS X 10.4.11 update. But one can't be used without the other. So I'm not sure how to update everything safely and get an up to date system, without having all the problems I had before. So now I'm using Mac OS X 10.4.7 so I can have a stable system to do my work, but I can't run iTunes 7.0. I'm too scared to update OS b/c I can't waste another day re-installing everything (for like the third time).
I'm a pretty new Mac user (year and half) so this may sound really dumb, but any suggestions would be very welcomed. I may start a new thread instead of hijacking this one...

I record some information to some slides but the presentation doesn't start from the 1st one but from the one I started the recording. What should I do?

I record some information to some slides but the presentation doesn't start from the 1st one but from the one I started the recording. What should I do?
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Driver details gives 'c:\Windows\system32\drivers\dmk.sys'.
There is still no sound, although the little level meter on the control shows a green bar rising and falling.
Obviously, it thinks it's working, but there's no connection to the speakers. They're not muted, either. I checked that too.
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Hi
First of all I couldnt get your problem as in your query description you have written "sometimes the video doesn't skips a couple of seconds from the beginning even though the value of NetStream.time property is 0" which is contradictory with the query title "Video doesn't start from the beginning".
But anyways I think you should check ns.time in Play.Start there you should get always 0 but in Buffer.Full there may be the case that ns.time is not 0 but has some value but that value is very small less than 1.
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Please help my iMac will not start. The apple logo comes up and the wheel goes round and then I am left with an empty white sceen can anyone help

Please help, my iMac will not start up, the apple comes up and the wheel goes round but then I am left with a blank white screen. Has anyone any ideas.

Locate your original install disk (it's grey) and use it to restart your iMac by holding the "C" key during startup. Use the disk utility to repair your harddrive.

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the 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 the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from 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.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start 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.
d. 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
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up 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.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start 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 the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up 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, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup 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 restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the 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 restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

Imac wont boot - i get a white screen with apple logo, and it loads to about 10%, then screen goes black

imac wont boot - i get a white screen with apple logo, and it loads to about 10%, then screen goes black

Hey there mtriest,
It sounds like you are unable to boot the iMac successfully as it keeps shutting down when you try to boot. I suggest the troubleshooting from the following article named:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
Disconnect, test peripheral devices and network cables
Note: "Peripheral devices" refers to external devices other than what came with your Mac, such as hard drives, printers, or hubs that you connect via a USB or FireWire cable.
Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
Disconnect all peripheral devices such as external hard drives or printers (leave only the display, a keyboard, and mouse connected).
Disconnect any Ethernet cables.
Start up your Mac.
If you can start up this way, one or more of your peripheral devices (or installed software related to the device) is probably causing the gray screen issue. Connect one device, then restart your Mac to test for the issue. Repeat the process until you locate the device at issue. Make sure the device is powered if it needs to be to operate correctly. Check with the manufacturer of the device for support or possible software driver or firmware updates that may be available for the device. Try a different cable with the device if possible (such as a different USB or FireWire cable).
Note: If you have multiple peripheral devices and the issue only occurs when they are all connected, but not when each device is the only peripheral connected, see the Additional Information section below.
If you are using a desktop Mac with a third-party keyboard and/or mouse device, and the issue still occurs, try starting up with an Apple keyboard and mouse connected instead. Try starting with no keyboard and mouse connected, then connect them after start up. Also, try a different USB port on your Mac.
If the gray screen issue persists with no devices connected, go to the next section (with the peripherals still disconnected).
Perform a Safe BootSimply performing a Safe Boot may resolve this issue.
Shut down your Mac. If necessary, hold your Mac's power button for several seconds to force it to power down.
Start your Mac, then immediately hold the Shift key. This performs a Safe Boot. Advanced tip: If you want to see the status of a Safe Boot as it progresses, you can hold Shift-Command-V during start up (instead of just Shift).
Note: A Safe Boot takes longer than a typical start up because it includes a disk check and other operations.
If your Mac starts up as expected, immediately try restarting.
If the Safe Boot does not work, or the restart after a successful Safe Boot does not work, go to the next section.
There is additional information in the article with further troubleshooting if needed.
Thank you for using Apple Support Communities.
Cheers,
Sterling

When i turn on my computer it freezes in the white screen and the spinning wheel and it won't move from there ... I have turned it off and on several times and took out the battery and it keeps on doing the same thing again what can i do ???

when i turn on my computer it freezes in the white screen and the spinning wheel and it won't move from there ... I have turned it off and on several times and took out the battery and it keeps on doing the same thing again what can i do ??? please i need help with this and how can i fix it

Here is some pertinent information and how-to's from Apple:
http://support.apple.com/kb/TS2570
Post back if these troubleshooting steps do not work.

I bought iphone 5s 2 days ago and suddenly it turn off and start again till the white screen with apple logo and start again

i bought iphone 5s 2 days ago and suddenly it turn off and start again till the white screen with apple logo and start again
please answer me as soon as possible

Hello Ahmedabokamar,
Thanks for the question! I'd recommend taking a look at the following article for troubleshooting steps that can help get your iPhone working again.
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
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My iMac goes to the white screen and stops

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Josh Mellicker wrote:
Does the white screen have a series of small multicolored color "chips" on it? And is there a band at the bottom that is half "noise"?
michaelfromutah wrote:
...I inserted my reinstall disk and double clicked the restore icon...
What "restore icon"?
If you have the Mac OS X install disc in the drive, switch on your Mac, and hold the Option (⌥) key.
You will see a grey screen, with Macintosh HD & after a few seconds, a CD with Mac OS X Install DVD.
Click on the DVD and then the arrow underneath it. This will start up the Mac OS X installer.
From here, you need to choose your language and then from the Utilities menu, choose Disk Utility.
Then choose Macintosh HD from the left, and choose "Verify Disk" not permissions
Let us know how you go.

Macbook Air starts with a white screen and permanent "poing"-sound...

Macbook Air starts with a white screen and permanent "poing"-sound...
Tried SMU, PRAM, MMU resets, but nothing helps...
Thank you for your support.

You need to take it in for service, it may be a stuck key or component failure.

I cannot access Content Library in iMovie - Content Library doesn't show on the iMovie screen and is greyed out when accessed through "windows" tab at the top. Also unable to update the projects/events (a suggested solution for a similar question).

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HT1533 Help my iMac doesn't start from the white screen and apple and whirring gear icon.

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