Mac mini wont get past the gray apple screen

recently i bought a mac mini with intel i5 processor and os lion installed, it was perfectly running until today it wont start or rather get past the initial apple sreen with the spinning gear. yesterday i connected an external usb drive 1tb to use as backup disk and store my songs for itunes. today i cant use it , ihave tried safe mode booting , pressing command, option , p and r keys during startup, removing the power cord then reattaching it. anybody have a solution.

i have tried removing the external drive but still problem persists

Similar Messages

I can't get past the Gray apple screen during start-up Help!!!

I went to open my system pref. folder and when it wouldnt open I restarted it and now I can't get past the first screen of the Gray screen with the apple in the middle and the little spinning circle under it. Can anyone help me? have had several problems with this computer!!! I just had to have a whole new harddrive put in about a month ago.
powerbook g4 15 inch Mac OS X (10.4.8)

Welcome to the Discussions!
The first thing to do would be to boot from your original Disk 1 by:
1. Inserting the disc, pressing the power button, and immediately after the startup chime, press and hold the C key until you see the spinning gear icon appear on the grey splash screen.
2. After the machine has booted, pick your language, and when the Installer window appears, do not press Continue, but go to the Utilities menu in the menubar and open Disk Utility.
3. In Disk Utility, choose your normal startup volume in the pane on the left and then click Repair Disk. If any errors show in the window, run Repair Disk again until you see 'The volume appears to be OK' in green.
4. Quit Disk Utility, quit the installer and attempt to restart into your regular startup volume.
Please update your profile so we have a clearer picture of your particular machine.
Joe
<img src="http://homepage.mac.com/joeuu/.Pictures/groundzero5.jpg"width="20"

How to get past the gray apple screen

I've downloaded os 10.3 on a cd and I tried to press the c button but nothing happens please someone help

Hi, and welcome to Apple Support Communities.
You can't download a bootable Mac OS X 10.3 (Panther) CD. You have to buy the full retail install set.
Or, if the iBook originally came with Mac OS X 10.3, you need the original system CDs that came with the iBook when it was new.

My macbook wont get past the gray startup page !!

my macbook air wont get past the gray startup page!!
i read about it and i think its because of the HD low space !
so what should i do ?
i tryed to repaire it and it didnt work !!

With an external drive, after it has been setup, partitioned, etc., go to System Preferences and Time Machine, or if TM is showing on your dock, just click on it, and turn time machine on...you can then give it the name of the partition on the external drive where you want to backup. TM will do that in the background and you don't have to think about it.
I have the Mercury Elite Pro drive from OWC, 2 TB, that I partitioned into a backup partition and working partition...so TM backs up regularly and I can use the other partition for either another bootable Mac OS X space or just point applications to that space for file storage.
You can clone the operating system using Carbon Copy Cloner or SuperDuper which are both free downloads. They make a bootable copy of the operating system for you.

My mac won''t go past the gray startup screen

I was using my ibook g4 (1.33GHz) yesterday to rip a dvd, safari was also running. the computer froze and black writing appeared on the screen at the left hand side. It said something about 'kernel', but as i don't speak computer language i just held the power button to turn off the computer, hoping it would be fine once i restarted.
I waited about a minute then i restarted but it wont go past the gray startup screen with the gray apple logo and the spinning progress wheel. I have tried to restart in safe mode and have also reset the PMU(power management unit) but still the same. I can't figure out what to do, and i really need to access files stored on my HD urgently. please if anybody can help me i''d really apprecite it,
thanks.
iBook G4 Mac OS X (10.4.9)

Hi,
This article may help. What happened was a kernel panic. They can be caused by either hardware or software. Try the syeps outlined in the article and post back the results.
John

I can't get past the grey apple screen using mavericks

I can't get past the grey apple screen trying to boot up with Mavericks. I had been using Mavericks for about a month (only had issues of freezing occasionally). I read in one of the posts here that I should try holding command R down when booting. I did now I just get a grey screen without the apple. Any advise?
I have a Mac Mini

Hello ther cnickers,
It sounds like the initial install of Mavericks went ok, and you have been using it for a while, but now cannot boot to your desktop and are stuck at a gray screen with an Apple logo. I would recommend a couple of things here:
First, try performing a Safe Boot to see if that will load up for you. If so then leave Safe Boot and restart from the Apple menu to try and get to your deskop:
To start up into Safe Mode (to Safe Boot), follow these steps.
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key.
The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple logo and the progress indicator (looks like a spinning gear).
After the logo appears, you should see a progress bar during startup. This indicates that your computer is performing a directory check as part of Safe Mode.
To leave Safe Mode, restart your computer without holding any keys during startup.
From: Mac OS X: What is Safe Boot, Safe Mode?
http://support.apple.com/kb/ht1564
If that works fine, I would next also verify and repair your disk if needed.
Disk Utility 12.x: Repair a disk
http://support.apple.com/kb/PH5836
Print this help page so you can refer to it later. (You don’t have access to Disk Utility Help when you restart up your computer in the next step.)In the Disk Utility Help window, choose Print from the Action pop-up menu (looks like a gear).
Choose Apple menu > Restart. Hold down the Command (⌘) and R keys as your computer restarts.When you see a white screen with an Apple logo in the middle, you can release the keys.
Click Disk Utility, and then click Continue.
In the list at the left, select the item you want to repair. (Be sure to select an item that’s indented to the right in the list, not an item at the far left.)
Click First Aid.
If Disk Utility tells you the disk is about to fail, back it up and replace it. You can’t repair it.
Click Repair Disk.If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. Otherwise, you may need to do one of the following steps.
If Disk Utility reports “overlapped extent allocation” errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. Check each file in the list of affected files. If you can replace a file or recreate it, delete it. If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted. (Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.)
If Disk Utility can’t repair your disk or it reports “The underlying task reported failure,” try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall Mac OS X, and then restore your backed-up data.If you continue to have problems with your disk, it may be physically damaged and need to be replaced.
Thank you for using Apple Support Communities.
Cheers,
Sterling

My macbook air won't get past the white apple screen. I've tried power cycling the batter but won't help

my macbook air won't get past the white apple screen. I've tried power cycling the batter but won't help

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 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 you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
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, 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.

MacBook won't load past the gray apple screen, what do I do?

A few months ago my cat peed on my computer and despite the battery no longer working the computer its self continued working fine after letting it sit a few days.
A few weeks ago I accidentally unplugged it form the wall forcefully turning it off, when I tried to turn it back on it wouldn't go past the gray apple logo with the spinning pinwheel.
I've tried to troubleshooting it numerous times but even after letting it safe boot all night I came to no avail.
All the suggestions I've gotten on other sites say I sould re-install the OSX server, the problem being I don't know how, or which OSX I have, they also say the memory will probably be erased, I can't have this happen because I have many things I wrote on there that I have no where else. I bought this laptop in the first few days of 2009.
What do I do without erasing the memory?

Hello,
Could someone help me, please? I apologize for the long message but I want to be as detailed as possible.
My MacBook (purchased early 2006, white 13", upgraded to Leopard about a year ago with no problems until now) will not boot past the grey screen and spinning wheel.
Here' are the list of 6 steps I've followed so far and still is not working. Oh, and I do not have any peripherals attached to my MacBook:
1. Reboot in Safe Mode: tried pressing down the Shift key before the powering up sound AND after the sound. Could not get into Safe Mode. Did this several times, holding the Shift key for as much as a minute or two. Nothing but grey screen and spinning wheel.
2. Reset NVRAM/PRAM: CMDR+POption: Computer restarted but still goes into Grey Screen, spinning wheel and stays there forever.
3. CMD +S: I read this online. Gave me a black screen with a lot of information, but I don't know how to read the computer jargon, let alone know what to do with said info.
4. Disk Utility Repair Disk : Inserted my Leopard install disk. Went to Utility Disk. Performed a Repair Disk and I did get two error messages, something related to id 70000452 should be id 70000450 ( I'm sorry to say I cannot remember the exact error messages). But it showed as repaired. When I did a 2nd Repair Disk, I got the message that the volume appears to be OK. Turned off and on again, nothing but grey screen and wheel.
5. Disk Utility Repair Disk Permissions: got several error messages and this time some could not be repaired:
-Permissions differ on system/library/CoreServices/Front Row.app/Contents.... should be -rw-rw-r-- , they are lrw-rw-r--
I got this about 4 times.
-Permissions differ on System/Library/PrivateFrameworks/DiskManagement.framework/Versions/a/Resources/ DiskManagementTool has been modified and will not be repaired.
-Permissions differ on System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/Resou rces/Locum has been modified and will not be repaired.
-SIUD file has been modified and cannot be repaired also shows twice.
I've read that these messages can be ignored. Is this true? I verified permissions after that, rebooted and still the same grey screen and wheel.
6. FINALLY: I tried to hook a FireWire from my notebook to my sis, iMac, and see if my HD shows up on hers so I can try to copy and save my pics and music. I was then planning to Erase and Reinstall. But my HD doesn't show up. I turned off both Macs and turned on, pressing T on my Notebook so it acts as a drive, but nothing shows up on my sis iMac. What am I doing wrong here?
And if it cannot be repaired, what do I do?
I'm an amateur photographer and would like to save all my pics, as well as my iTunes music. Much of everything else is just docs, and I think I backed the docs up, but not iTunes or the pics lately (not enough memory available in my flash drive). It also means I do not have a lot of RAM available (I know, I should've bought an external hard drive :o) to perform an Archive and Install.
Can I save my pics and music? Is it all lost? Help please?
Thanks
Andy

Powerbook won't get past OSX gray apple screen

powerbook pismo running OSX for years...much joy and happiness,
up to this point.
Upon starting up my powerbook, I get the good chime and then the gray screen with the apple but no spinning wheel at the bottom, it will go no further.
It just sits there with the gray screen and the apple. I've tried the following:
Safe mode
Reset pram
target mode from another mac shows the pismo hard disk. I can run disk utility on it and the drive is ok.
Still no startup.
Reinstalled the OS from the other mac using target mode and it installed ok. Still no further than the gray apple screen.
It will not start from DVD or from a firewire drive with the OS installed on it
It does see the system folder when I tell it to let me choose a system at startup. I choose it and we are back at the gray screen.
Is this a pram or firmware issue maybe a internal battery
I have other macs, and I can move on, but still would like to solve this puzzle.
Thank you very much.

zydeco,
I am not sure if I can help, but here are a few suggestions...
1. If you have the original software, you may still have the Apple Hardware Test CD. Disconnect all peripherals including a USB mouse, then see if you can boot to the CD.
http://docs.info.apple.com/article.html?artnum=112433
2. If you have the internal original AirPort card, remove this card and try starting. A bad card can prevent startup.
http://docs.info.apple.com/article.html?artnum=50028
If neither of the two suggestions help, please post back.

My Macbook wont turn on, it gets pasted the White Apple screen then goes to a Blue screen that quickly turns a slightly darker shade of blue with the familiar loading icon then back again and does this over and over. What should I do? please help!

So today my iPhone decides to go into recovery mode on me randomly so I plugged it into my Macbook right away, but it wasn't showing up in iTunes so I did a quick internet search as to why that could be. On the Mac support forum I found instructions stating I should make sure I had the current verison of iTunes on my computer, turns out I had been putting off an Update because I didn't like waiting for it to restart n so forth. So I clicked my boucning update friend at the bottom of my screen and it started checking for updates, the bar got maybe a quarter of the way up and then stopped moving all together, I thought something was wrong so I clicked cancel and tried again. The same thing happened so I clicked cancel and went back to the Internet to find more help on my problems. I found yet another forum saying this solution was simple, restart the computer. So i clicked my little apple at the top and pressed restart and that has been the last thing I got to do on my computer because when it restarted it got past the White Apple logo screen and went on to a Blue screen which quickly turned a darker shade and had the loading circle, then back to the previous blue screen, then right back to the darker one. This process it repeated several times and I can't for the life of me figure out what to do. Please someone have a simple answer to this that I haven't Already tried, I have already tried safe mode and it just doesn't work for me. Please please help I need my computer for class it has all my notes and a paper I was doing, not to mention my iphone is still in recovery mode, even when I can get to another computer to fix that I need all the back up files off of my macbook to restore it to what I know it as and not default.

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

My G-5 Won't go past the Grey Apple Screen......HELP HELP HELP

I have a G-5 PowerMac.
Its about a year old.
I have used it more than sparingly. I bought it for video editing and have no other programs installed on it that didn't come with the computer besides Final Cut Pro
I tried to turn it on this morning to edit a project i'm working on and the thing just wont get past the Grey Apple Screen.
I really need help here. My hardware warranty runs out on December 31st and I dont have money for the Applecare $250 is really steep.
Help me turn the thing back on and get my editing going please
Email me at [email protected] if you can help me out
thanks
Chris
Power Mac G5 Dual Processor Mac OS X (10.4)

Hey Cris
I just got thru the same problem. My G5 was only 30 days old. I contacted Apple and after many phone calls I ended up purchasing the Applecare.
The parts were on back order for two weeks and they ended up replacing the logic board and the processor.
Good Luck!!!

On Startup, Stuck at the Gray Apple Screen & No Bootup

I used my powerbook last night and shut it down. Upon getting to work and turning it on, I haven't been able to get past the Gray Apple logo screen and loading dial.
I've been on several different boards and one gave me the steps to restart w/ the OSX install disk and hold "c". This worked, got me to the disk utility tool and I was successful in running a verification and repair. Here's the list of info it gave me:
Verify and Repair volume "Core HD"
Checking Journaled HFS Plus Volume
Checking Extents Overflow File
Checking Catalog File
Checking Multi-Linked Files
Checking Hierarchy
Checking Extended Attributes File
Checking Volume Bitmap
Checking Volume Information
The volume Core HD appears to be ok (in green letters)
So, from that, it "appears" to be ok, but I tried to do a restart from this area booting from the Core HD that contains my working content and I go right back to the gray loading screen.
_Any other advice before I take it to the Apple Genius Bar?_
_Possible issues to look for or tricks to try out?_
==========================
*Back info:* My battery has been going out lately and I noticed for the past week that I have to have my powersupply plugged into the powerbook in order to run (battery isn't keeping juice). So when I've had to disconnect the power supply to put the powerbook in my computer bag, the system shuts down and I have to restart w/ the power supply in.
_Could this have screwed up my HD or anything else?_
Thanks for any help in advance!
Rick in LA

*: SUCCESSFUL UPDATE! :*
So, I tried it all w/o success at home, but was optimistic since I could still see my files when running the disk utility.
I went to the Apple Store near my house and I explained the situation to the Mac Genius guy. Again, he was able to boot from another disk, but still not my internal disk.
Final Determination: Corrupted OS & the need to Archive & Reinstall OSX 10.5
*Result = SUCCESS!*
He said, that the OS must have gotten corrupted by way of an update that didn't fully take or a newly installed program that may have disrupted the system.
So, we reinstalled (took about an hour and some change), I got to play with all the new Apple toys and got access to my desktop again all for free. No charge and of course the customer service was friendly and accommodating.
So, I guess the stuck gray screen w/ apple logo could always mean a couple of things, but if the data is still there and you've run through all other options, you can always try an archive and reinstall. Worked for me and I'm posting this message from my operable Powerbook now.
Thanks for the helpful advice TJK. And thanks for sharing your experience Wim138. Hope this helps anyone experiencing the same issue.

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.

My MacBook Air can't get past the gray screen with the apple logo. What's the fix?

My MacBook Air can't get past the gray screen with the Apple logo, so I can't login. Does anyone know the fix for this?

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 Recovery by holding down the key combination command-R at the startup chime, or from a local Time Machine backup volume (option key at startup.) Release the keys when you see a gray screen with a spinning dial. When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
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 by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
How to use and troubleshoot FireWire target disk mode
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
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.
Before reconnecting an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode.* The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
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.
*Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Post for further instructions.
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 damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, 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 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see above for instructions.) 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 produces. Look for the line "Permissions repaired successfully" at the end of the output. Then reboot as usual.
Step 6
Boot into Recovery again. When the OS X Utilities screen appears, follow the prompts to 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.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
Step 7
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 backup.
Step 8
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.

My ipod touch 4g 8 gigs is not turning on it wont get past the apple logo its not frozen because it turns the screen black and the apple logo please help me

my ipod touch 4g 8 gigs is not turning on it wont get past the apple logo its not frozen because it turns the screen black and the apple logo please help me

- Try a reset.
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Then connect to your computer and try to restore.
- See if placing the iPod in recovery mode will allow a restore. For recovery mode see:
iPhone and iPod touch: Unable to update or restore
- If the logo still show all the time, let the battery fully drain. After charging for an hour try the above again.

Mac mini wont get past the gray apple screen

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