HT1414 still has white screen after restore

I still have a white screen after restart and restore

If you restored to factory settings/new iPod via iTunes (Not via Settings>General>Reset>Erase all Content and Setting) and still have the problem that indicates a hardware problem.
Make an appointment at the Genius Bar of an Apple store..
Apple Retail Store - Genius Bar

Similar Messages

TS3474 my i pod is still on a white screen after restoring with the two buttons and also restoring on i tunes and it still has a white screen

my i pod is still on a white screen after restoring with the two buttons and also restoring on i tunes and it still has a white screen

I've been struggling with mine all morning with the same issue.
Mine would not wake up from sleep (will just white screen).
It will boot using a hard reset (i.e. the power button and volume down button being held down for 8 or so secs). I restored and synced it multiple times but it still has a problem waking up and just just goes to white screen.
I saw a post suggesting a loose connection which I had my doubts about (as it will wake with hard reset) - bit BINGO! If I wake mine (with index finger) whilst applying pressure to the top of the screen area (with my thumbs) it will wake up. When I become frustrated enough I'll take it apart and see if something has become loose.
Hope this helps.

IPod 4th Gen has white screen after replacement, and restore

Okay. Here's the problem. A while ago, I dropped my iPod, and it's screen cracked. I've been living with it ever since perfectly, but just with a cracked screen. Now, I ordered a new screen, and I begin to replace it. I knew how, and like an easy job, I did it pretty quick compared to others. After both ribbon cables where in, I pressed the lock button, and my iPod had a white screen. I was a little worried about that, so, I tried to reattach the screen. Now it was just black, after even using the home and lock button restart method. Eventually I got it back up and to the white screen by draining the battery and recharging, and there I was again, stuck. I looked at some forums on the internet to try to see if anyone had my problem. After clicking on the first link, it turns out, alot of people had this problem as well as me. The solution they said was pressing the home button and lock button for about 10 or so seconds, and then it goes to the apple screen and is all better again. I tried it, and my home button broke. Great. So, now I had to use the little button that the home button was pressing down to try the solution. Tried it, and, nothing. Still the blank, plain, white screen. Looked some more and saw that pressing the home and lock buttons along with the volume up button worked for some people too. Tried it, worked just as good as the previous one. Nothing. I even tried some person's idea of doing home, then volume up, then lock, in different timed stages. Nothing. I also saw people begging for them not to restore their iPods and begging for a solution. I was fine with a restore, I just had games that I played on my iPhone as well. So, I went with it, and restored it, without any backups, just going to factory mode. Afterwards I heard my iPod make the iOS "plugged in" sound, and anxiously tried the lock button. Still had the white screen. STILL. Now, I'm here, begging for a solution like others, with an iPod that won't function properly. Can someone please help me?

No nothing like that happened, I'm sure, but I actually spent the day looking for a fix. Luckily, I had the idea of taping the spring down because I though the screen didn't touch it. Turns out I was right, but however, I found out that the screen I ordered was broken in a way, because it still had the white screen after the taping. Just to make sure, I tried the other screen to clarify if the taping worked or not. I did the home and lock button restart, and up popped the apple logo. So, that means that the screen I got from the seller was either a rip-off, or was just broken somehow in process of making, or delivering in some matter. Unfortunately, I think I can't ship it back unless for alot of money because the person I got it from comes from China. I live in the USA. So that's gonna be a matter to work with myself. Thank you for trying to help.

White screen after restoring from Time Machine. HELP

I had to get my Hard Drive replaced (500 gb, 5400, OSX 10.6 is what it says on the receipt) and while I was waiting, after two hours, for it to restore from my external hard drive (WD 1TB), it said only 22 more minutes and then it suddenly said 'The disk was not ejected properly'. Then it changed its mind to Finished and everything was supposed to be transferred. I was told to log out of my account as soon as it was finished. I did so and now the screen has been white for 2 hours. It's making that air-refreshing-sound it does sometimes. Mouse is frozen too. No booting just white screen.
I am soo nervous because I have ALL MY WORK that I really need transferred ASAP.
I am soo greatful for every piece of advice as I have no idea what to do!!!!
p.s. I don't have any internet connection at home either...

If you don't already have a current backup, back up all data, then reinstall the OS.* You don't need to erase the startup volume, and you won't need the backup unless something goes wrong. If the system was upgraded from an older version of OS X, you may need the Apple ID and password you used.
If you use FileVault 2, then before running the Installer you must launch Disk Utility and select the icon of the FileVault startup volume ("Macintosh HD," unless you gave it a different name.) It will be nested below another icon with the same name. Click the Unlock button in the toolbar and enter your login password when prompted. Then quit Disk Utility to be returned to the main Recovery screen.
There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
If you installed the Java runtime distributed by Apple and still need it, you'll have to reinstall it. The same goes for Xcode. All other data will be preserved.
*The linked support article refers to OS X 10.9 ("Mavericks"), but the procedure is the same for OS X 10.7 ("Lion") and later.

IMac has white screen after last update!

I am running maverick on my iMac. After this last update installed I am getting the white screen. It was working fine before. I have tried unplugging everything and restarting and that did not work. I have downloaded and reinstalled maverick and that didn't work. I have ran the disk utilities and the disk and permissions are good. When I am in the disk utility screen there are fuzzy about 1 inch lines running up and down the screen about 2 inches apart. And when I enter the disk utility start up the screen that is gray with the apple logo is all fuzzy. I have a time machine backup but it is a month or so old and I have a couple of files I really need to save if I can.

I Have gotten in using the left shift key forcing safe mode. There are still verticle lines up and down the screen.

My mac book pro retina has white screen after login in both users !!!! Don't know what to do

It was working fine till night.
Next morning I tried to log in and white screen appears. Cant see anything except cursor.
I have been getting message of " start up disk is full" from last week or so.
Please let me know if anybody knows how to resolve it!!!
Thanks

Welcome to Apple Support Communities
You need more free storage. If your Mac is frozen, hold the Power button until it turns off.
Then, hold the Shift key while your Mac is starting to start in safe mode. Safe mode will allow you to access into Mac OS X and delete or move data, so you can use Mac OS X in normal mode again.
After logging in, the only thing you have to do is to look for files in your user's folders and delete or move them to an external drive. You can also see what categories are taking more space in  > About this Mac > More Info > Storage.
When you have finished, restart and see if you can log in

Nano 7 white screen after workout

ipod nano 7 gen has white screen after working out
any way to fix?

Restore on iTunes.
Restoring iPod to factory settings
Hope this helps.

IPod touch not responding and has white screen. Tried to restore, drain battery and re-charge etc but still nothing. What can I do?

iPod touch not responding and has white screen. Tried to restore, drain battery and re-charge etc but still nothing. What can I do?

Try what you have not tried so far. You may have tried all and the Apple store maybe in order.
- 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 iPod fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

TS3274 My iPad has a white screen after trying to restore. I try and restore again and the same thing happens and we are back at the white screen. How can I get it back.

My iPad has a white screen after trying to restore. I try and restore again and the same thing happens and we are back at the white screen. How can I get it back?

type HT4097 in the search bar. its unable to update or restore iOS. Follow the instructions and if that does not work then id go to the local apple store.

Imac has white screen and spinning wheel and will not boot up---after lion install

imac has white screen and spinning wheel and will not boot up---after lion install

Please read Gray screen appears during startup.

HT1459 how to permanently fix white screen after resetting and restoring

How to permanently fix a 'White Screen" after resetting and restoring? 2nd generation ipod

There are two different resets. The reset you did involved holding the sleep/wake & home button.
The other reset will do exactly what it says. That reset is located in Settings - General - Reset.

Plz i have i phone 4 i restor it to 7.1.1 ios but icloud activation has been set up on th screen after restor .. this iphone is a gift from my father ..but he is dad plz plz help me

plz i have i phone 4 i restor it to 7.1.1 ios but icloud activation has been set up on th screen after restor .. this iphone is a gift from my father ..but he is dad plz plz help me

Has your phone ever been hacked or jailbroken. This error message is what usually shows up for that. Are you using a supported carrier for the iPhone, or did someone hack the phone to unlock it to be used on another carrier. If that is the case, then there is no help you can get here as discussing hacked/jailbroken devices is not allowed.

White screen after recharging

I have had my iphone for 3 months. Since upgrading to OS 3.1.3 I have gotten a white screen after recharging that goes away with a reset. Has anyone else seen this problem? I have tried a restore and will see what happens the next time I recharge.

I tried the suggestion and it doesnt work. I still have a blank white screen!!! Scared to restore, I don't want to lose any data. lease help now, I've been at this for the last 5 hours!!!!

[Solved] White screen after KDE 4.11.1 upgrade

Hi!
I updated the system going from KDE 4.11.0 to KDE 4.11.1. On reboot I got the correct loading of KDM, but upon arrival on the desktop the latter is presented fully white with big red button with an "X" in them. Thinking it was the configuration of kde, I deleted .kde4 with the effect that the next time I always white screen (that is only the red buttons have disappeared).
I try to remove completely kde with:
pacman -Rsnc kde
and seeing that reinstalling I get the same result, I also tried to clean up the cache pacman packages listed by the command:
ls kde*4.11.1*
so I redownload and reinstalled with:
pacman -Syu kde
without solution. I also tried to do what is recommended in the wiki, that is in addition to eliminating .kde4, I run:
$ rm ~/.config/Trolltech.conf
$ kbuildsycoca4 --noincremental
without solution.
Thinking then it might be the partition / almost full, I checked with:
df
but the partition is not filled even for half of the 30gb that is available.
I checked some logs and these are the outputs:
.xsession-errors
> http://pastebin.com/GESX81PV
boot.log
[[32m OK [0m] Started Load Kernel Modules.
Mounting Configuration File System...
[[32m OK [0m] Mounted Configuration File System.
[[32m OK [0m] Found device SAMSUNG_SSD_830_Series.
Mounting /Windows...
Mounting FUSE Control File System...
[[32m OK [0m] Mounted FUSE Control File System.
[[32m OK [0m] Mounted /Windows.
[[32m OK [0m] Found device WDC_WD10EALX-009BA0.
Mounting /Dati...
[[32m OK [0m] Mounted /Dati.
[[32m OK [0m] Reached target Local File Systems.
Starting Trigger Flushing of Journal to Persistent Storage...
Starting Recreate Volatile Files and Directories...
Starting Tell Plymouth To Write Out Runtime Data...
[[32m OK [0m] Reached target Bluetooth.
[[32m OK [0m] Started Trigger Flushing of Journal to Persistent Storage.
[[32m OK [0m] Started Recreate Volatile Files and Directories.
Starting Update UTMP about System Reboot/Shutdown...
[[32m OK [0m] Started Update UTMP about System Reboot/Shutdown.
[[32m OK [0m] Started Show Plymouth Boot Screen.
[[32m OK [0m] Started Tell Plymouth To Write Out Runtime Data.
[[32m OK [0m] Reached target System Initialization.
[[32m OK [0m] Listening on CUPS Printing Service Sockets.
[[32m OK [0m] Reached target Paths.
[[32m OK [0m] Listening on D-Bus System Message Bus Socket.
[[32m OK [0m] Reached target Sockets.
[[32m OK [0m] Reached target Timers.
Starting Restore Sound Card State...
[[32m OK [0m] Reached target Basic System.
Starting Network Manager...
Starting CUPS Printing Service...
[[32m OK [0m] Started CUPS Printing Service.
Starting Catalyst's fglrx kernel' module builder...
Starting Login Service...
Starting D-Bus System Message Bus...
[[32m OK [0m] Started D-Bus System Message Bus.
Starting Permit User Sessions...
[[32m OK [0m] Started Permit User Sessions.
Starting Wait for Plymouth Boot Screen to Quit...
Starting K Display Manager...
[[32m OK [0m] Started K Display Manager.
[[32m OK [0m] Started Catalyst's fglrx kernel' module builder.
[[32m OK [0m] Reached target Sound Card.
[[32m OK [0m] Started Restore Sound Card State.
[[32m OK [0m] Started Login Service.
Starting Manage, Install and Generate Color Profiles...
Starting Authorization Manager...
[[32m OK [0m] Started Manage, Install and Generate Color Profiles.
[[32m OK [0m] Started Authorization Manager.
[[32m OK [0m] Started Network Manager.
[[32m OK [0m] Reached target Network.
Starting Network Time Service...
[[32m OK [0m] Started Network Time Service.
[[0m[31m* [0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K[[1;31m*[0m[31m* [0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K[[31m*[1;31m*[0m[31m* [0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K[ [31m*[1;31m*[0m[31m* [0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K[ [31m*[1;31m*[0m[31m* [0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K Starting Daemon for power management...
[[32m OK [0m] Started Daemon for power management.
Starting Disk Manager...
[[32m OK [0m] Started Disk Manager.
[ [31m*[1;31m*[0m[31m*[0m] A start job is running for Wait for Plymouth Boot Screen to Quit
[K[[1;31mFAILED[0m] Failed to start Wait for Plymouth Boot Screen to Quit.
See 'systemctl status plymouth-quit-wait.service' for details.
Starting Getty on tty1...
[[32m OK [0m] Started Getty on tty1.
[[32m OK [0m] Reached target Login Prompts.
[[32m OK [0m] Reached target Multi-User System.
[[32m OK [0m] Reached target Graphical Interface.
[[32m OK [0m] Stopped target Sound Card.
[[32m OK [0m] Stopped target Bluetooth.
Stopping Disk Manager...
Stopping Daemon for power management...
Stopping Authorization Manager...
Stopping Manage, Install and Generate Color Profiles...
Stopping CUPS Printing Service...
[[32m OK [0m] Stopped target Graphical Interface.
[[32m OK [0m] Stopped target Multi-User System.
Stopping Network Time Service...
Stopping Catalyst's fglrx kernel' module builder...
Stopping Login Service...
Stopping D-Bus System Message Bus...
[[32m OK [0m] Stopped target Login Prompts.
Stopping Getty on tty1...
Stopping K Display Manager...
[[32m OK [0m] Stopped K Display Manager.
[[32m OK [0m] Stopped Daemon for power management.
[[32m OK [0m] Stopped Getty on tty1.
[[32m OK [0m] Stopped D-Bus System Message Bus.
[[32m OK [0m] Stopped Disk Manager.
Stopping Permit User Sessions...
[[32m OK [0m] Stopped Authorization Manager.
[[32m OK [0m] Stopped Network Time Service.
[[32m OK [0m] Stopped target Network.
Stopping Network Manager...
[[32m OK [0m] Stopped Manage, Install and Generate Color Profiles.
[[32m OK [0m] Stopped Catalyst's fglrx kernel' module builder.
[[32m OK [0m] Stopped Login Service.
[[32m OK [0m] Stopped Network Manager.
[[32m OK [0m] Stopped CUPS Printing Service.
[[32m OK [0m] Stopped Permit User Sessions.
[[32m OK [0m] Stopped target Basic System.
[[32m OK [0m] Stopped target Paths.
[[32m OK [0m] Stopped target Timers.
[[32m OK [0m] Stopped target Sockets.
[[32m OK [0m] Closed CUPS Printing Service Sockets.
[[32m OK [0m] Closed LVM2 metadata daemon socket.
[[32m OK [0m] Closed /dev/initctl Compatibility Named Pipe.
[[32m OK [0m] Closed Delayed Shutdown Socket.
[[32m OK [0m] Closed Device-mapper event daemon FIFOs.
[[32m OK [0m] Closed udev Control Socket.
[[32m OK [0m] Closed D-Bus System Message Bus Socket.
[[32m OK [0m] Stopped target System Initialization.
Unmounting Debug File System...
Unmounting FUSE Control File System...
Stopping Update UTMP about System Reboot/Shutdown...
Unmounting POSIX Message Queue File System...
Unmounting Huge Pages File System...
Stopping Setup Virtual Console...
[[32m OK [0m] Stopped Setup Virtual Console.
[[32m OK [0m] Unset automount Arbitrary Executable File Formats File System Automount Point.
Stopping Apply Kernel Variables...
[[32m OK [0m] Stopped Apply Kernel Variables.
Unmounting Configuration File System...
[[32m OK [0m] Stopped target Encrypted Volumes.
[[32m OK [0m] Stopped target Swap.
[[32m OK [0m] Stopped target Local File Systems.
Unmounting /Windows...
Unmounting /Dati...
Unmounting Temporary Directory...
Stopping Journal Service...
[[32m OK [0m] Stopped target Remote File Systems.
[[32m OK [0m] Stopped Update UTMP about System Reboot/Shutdown.
[[32m OK [0m] Unmounted Temporary Directory.
[[32m OK [0m] Unmounted POSIX Message Queue File System.
[[32m OK [0m] Unmounted FUSE Control File System.
[[32m OK [0m] Unmounted Huge Pages File System.
[[32m OK [0m] Unmounted Configuration File System.
Stopping Load Kernel Modules...
[[32m OK [0m] Stopped Load Kernel Modules.
[[32m OK [0m] Unmounted Debug File System.
[[32m OK [0m] Unmounted /Windows.
[[32m OK [0m] Unmounted /Dati.
[[32m OK [0m] Reached target Unmount All Filesystems.
[[32m OK [0m] Stopped target Local File Systems (Pre).
Stopping Remount Root and Kernel File Systems...
[[32m OK [0m] Stopped Remount Root and Kernel File Systems.
[[32m OK [0m] Stopped Journal Service.
[[32m OK [0m] Closed Journal Socket.
Starting Show Plymouth Reboot Screen...
Starting Store Sound Card State...
Unmounting /...
[[32m OK [0m] Started Store Sound Card State.
[[32m OK [0m] Reached target Shutdown.
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Hardware watchdog 'iTCO_wdt', version 0
Unmounting file systems.
All filesystems unmounted.
Deactivating swaps.
All swaps deactivated.
Detaching loop devices.
All loop devices detached.
Detaching DM devices.
All DM devices detached.
Storage is finalized.
dmesg
> http://pastebin.com/fbgh2ayu
journalctl -p 3 --since=today
-- Logs begin at mar 2013-07-30 13:16:10 CEST, end at lun 2013-09-16 08:52:14 CEST. --
set 16 08:43:14 arch dhcpcd[346]: eno1: ipv6rs_sendprobe: sendmsg: Cannot assign requested address
set 16 08:43:14 arch ntpd_intres[338]: host name not found: 0.pool.ntp.org
set 16 08:43:14 arch ntpd_intres[338]: host name not found: 1.pool.ntp.org
set 16 08:43:14 arch ntpd_intres[338]: host name not found: 2.pool.ntp.org
set 16 08:43:14 arch ntpd_intres[338]: host name not found: 3.pool.ntp.org
set 16 08:43:18 arch ntpd_intres[338]: host name not found: 0.pool.ntp.org
set 16 08:43:18 arch ntpd_intres[338]: host name not found: 1.pool.ntp.org
set 16 08:43:18 arch ntpd_intres[338]: host name not found: 2.pool.ntp.org
set 16 08:43:18 arch ntpd_intres[338]: host name not found: 3.pool.ntp.org
set 16 08:45:03 arch login[308]: pam_systemd(login:session): Failed to connect to system bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
set 16 08:45:04 arch kdm[351]: :0[351]: pam_systemd(kde:session): Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: Connection refused
set 16 08:45:04 arch kdm[351]: :0[351]: pam_close_session() failed: Cannot make/remove an entry for the specified session
set 16 08:45:04 arch systemd-coredump[1103]: Process 309 (X) dumped core.
[1;39m-- Reboot --[0m
set 16 08:46:11 arch dhcpcd[346]: eno1: ipv6rs_sendprobe: sendmsg: Cannot assign requested address
set 16 08:46:12 arch ntpd_intres[337]: host name not found: 0.pool.ntp.org
set 16 08:46:12 arch ntpd_intres[337]: host name not found: 1.pool.ntp.org
set 16 08:46:12 arch ntpd_intres[337]: host name not found: 2.pool.ntp.org
set 16 08:46:12 arch ntpd_intres[337]: host name not found: 3.pool.ntp.org
set 16 08:46:16 arch ntpd_intres[337]: host name not found: 0.pool.ntp.org
set 16 08:46:16 arch ntpd_intres[337]: host name not found: 1.pool.ntp.org
set 16 08:46:16 arch ntpd_intres[337]: host name not found: 2.pool.ntp.org
set 16 08:46:16 arch ntpd_intres[337]: host name not found: 3.pool.ntp.org
set 16 08:48:02 arch login[305]: pam_tally(login:auth): pam_get_uid; no such user
kdm.log
> http://pastebin.com/zmgj4AGq
Xorg.0.log has no errors.
How can I resolve it?
Thanks
Last edited by Fregtux (2013-09-20 08:35:13)

Fregtux wrote:
Thanks Thaodan! I deleted /var/tmp/kdecache-$USER and I solve the problem! I also restore .kde4_backup and at the moment have no issue.
Small question: I noticed that there are also kdecache-kdm and kdecache-root. I should remove it or doesn't matter?
Thanks for the help!
THANKS, my White Screen was caused by a combination of issues but this solution worked for me.
My Problem -
I am not sure exactly what caused my white screen, I was playing around with /etc/profile & /etc/sudoers
What I changed -
sudoers - I added my user group to sudoers and allowed sudo to execute applications using xauth in home dir
profile - changed umask to 133 ( I hate execute bit ) and default text editor to nano
What Happened -
Tried to reload via source but no changes where taking effect so I rebooted.
Upon reboot I could not login to KDE, it would keep looping back to the KDM after I entered by password for my user, however it would let me login as root ( after I enabled root login ).
I figured this was a permission issue so I changed umask back to 022 in /etc/profile, I was then greeted with the White Screen after login. I read numerous posts about how to fix this, most said to reinstall kde and delete /tmp, none of this worked.
I deleted /var/tmp/kdecache-$USER and now I am back in business ( I had to re set the widgets, i.e. panel ).
I was so excited that I had to write a post about it!
Thanks again!

My MacBook Pro won't go beyond a white screen, after I pushed the restart button. How can I get it to a login? I have routinely backed it up, but don't know how to bring that up, nor if I have a boot file on that external disk. Help!

My MacBook Pro won't go beyond a white screen, after I pushed the restart button. How can I get it to a login? I have routinely backed it up, but don't know how to bring that up, nor if I have a boot file on that external disk. Help!

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.

HT1414 still has white screen after restore

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