[T60] White screen after password entry during boot up

When i turn on my T60, it loads, i put in my password then the screen goes white, does anyone no how to get rid of this? or how to wipe laptop???
Moderator comment: New post created. Subject edited to match content.

Hello ger.sec,
Thank you for using Apple Support Communities.
You can use the following article to troubleshoot the startup issues on you iMac:
Troubleshooting: My computer won't turn on
Regards,
Jeff D.

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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.

IMac will not boot. Stuck at white screen after chime.

I am starting a new thread this because it seems that other people with this problem are able to get their Macs working with some sort of keyboard combination on boot. I am not. Nothing is working. My computer is currently a 27 inch brick... Actually a lamp, since it is frozen on a really nice white screen.....
Installed Yosemite on my 27" iMac (early 2010, i7) when Yosemite came out a couple weeks ago. Everything was working fine but it wouldn't read my external drive, so I did a reboot. After the reboot, it freezes on the white screen after the chime. No keyboard combinations work to get it to do anything....also, if I hit the power button it shuts off immediately.
Nothing is working to get it moving. And yes, I am using a usb keyboard, not the Bluetooth, to try to hit any of the keyboard combinations posted in various discussions.
My AppleCare is expired, so I'm going to be very upset if I have to go pay to have Apple fix their problematic software. Any help you guys can give will be greatly appreciated.
Thank you,

See if you can boot into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear and again when you log in. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don’t do them all at once.
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[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!

Mavericks white screen after login

After upgrading to Mavericks my MacBook now goes to a white screen after login screen. Anybody having same issue? Any solutions?

Reinstalling Mavericks, Lion/Mountain Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion, Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

How do i get out of white screen after login

How do i get out of the white screen after signing on to my computer.

Hi GregConk,
Thank you for visiting Apple Support Communities.
If I understand right, your iMac is only starting up to a blank white screen after you log in. If so, there are some good troubleshooting steps that may resolve this behavior.
First, try booting your computer into Safe Mode, to see if your desktop appears in this mode:
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.
From:
Mac OS X: Gray screen appears during startup - Apple Support
If you see your desktop in Safe Mode, but not when starting up normally, try the troubleshooting tips in this article next:
OS X Yosemite: If you think you have incompatible login items
Best Regards,
Jeremy

TS2570 white screen after login

i have a white screen after login on my macbook pro 17' what does that mean?
i cant do anything but all the users are accesable
no finder no desktop... nothing

Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.
Reinstall Lion, Mountain Lion, or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

27" 2009 iMac is stuck on white screen after OS X Maverick update

27" 2009 iMac is stuck on white screen after OS X Maverick update. How do I get past this White Screen? I have tried to use the PRAM reset, holding down Shift,Command, R, and P after turning off computer then when I turn it on, having those pressed until I see the apple symbol. I only hear one chime. Never get to a second chime. Thank you.

Startup - Gray, Blue or White screen at boot, w/spinner/progress bar
Startup - Gray Screen
Startup Issues - Resolve
Startup Issues - Resolve (2)

N97 White Screen .. Phone wont boot at all ... Stu...

Hello all,
So I have finally stumbled upon the White Screen of Death ... Really sad that it happened but I still have hope that it may work. THe phone does not boot up and its stuck on the Nokia logo
[Long read]
It happened one before a day and I managed to find a helpful topic
/discussions/board/message?board.id=smartphones&thread.id=141381
It had everything regarding reset codes and whatnot, but the really helpful message was from grschinon .. ( he seems to know what hes doing ) .. for he shared an amazing technique of holding the green and red buttons while booting up the phone, and it worked !!
But yesterday, it happened again .. The screen wont light up and the keylock was stuck, so I just removed the battery ... I turned it on while assuming that the red/green button technique will work, but it didnt
I tried it over and over again ( been trying for half a day actually ) .. but with no avail, it didnt work ..
I tried connecting it through usb, with the wall charger, different combinations of buttons ... meh none worked
Its really annoying that half of my friends keep saying, THIS is why you get a blackberry .. and similar stuff .. My previous phones are all Nokia and this is just a huge dissapointment .. the N95 is 500000 times better than the N97 in stability and etc ... I was anxiously waiting for v2.0 ... now my n97 is dead
[/Long read]
I understand that there is a solution that will FORMAT the whole phone, but I dont want that, there are lots of pictures on my internal memorycard (32gb one) and 30+ applications (if not more) .. I seriously dont want to lose all of those ..
So do you know any other way that I can fix the problem ?? Is there a soft reset combination that i can use rather than the hard reset one??
Please advise, your comments are really appreciated,
Kind Regards,
Z
Message Edited by ZaZu90 on 10-Oct-2009 12:08 PM

These are the solutions that i've colected over the internet:
I hope it help's you!
N97 White Screen .. Phone wont boot at all ... Stuck at Nokia logo
They instructed me to turn on the phone pressing the green, red and camera button at the same time as I pressed the power button.
It worked and the phone started.
I didn't need to format my phone.
Had the same problem with my White N97 (not that the colour probably makes a difference).
Was using the Facebook App on the main screen as a widget, tried to start it up by touching it - it seemed to not start even after waiting or trying multiple times.
So i thought to myself, "I'll just reboot my phone, that should fix it."
BAD IDEA.
Got stuck on the White Screen with the Blue "NOKIA" on it, so i thought...i'll wait and see what happens.
Nothing...for hours.
So i pulled the battery and put it back in again....powered on....same thing..."NOKIA"...and nothing else.
Repeated this about....10 times, getting more and more nervous that i had turned my $950AU phone that i had boasted to my friends that is better than their iphones....into a useless brick.
So, i turned to Google looking for answers...
Someone said they left the battery out of the phone until it went flat and had some success.
I found something about other users having a similar issue with other software (Garmin GPS software), and also the "Mail for Exchange" application.
They mentioned something about the only way to get it working again was to hard reset the phone to stop the apps from going online...
I REALLY didnt want to do a hard reset, as i had a bunch of apps and data that i DID NOT want to lose or spend like 3-4hours re-installing.
SO...I got thinking...how can i stop my apps from trying to go online without a hard reset.
So this is what i tried - and it worked!
1- Power off phone (if power button responds)
2- Pull out battery.
3- Remove memory card (if you have one)
4- Remove SIM card.
5- To make sure phone has no residule power hold down power button without any of the above inserted.
6- Re-insert battery only (without SIM card or Memory Card)
7- Cross your fingers and toes. (optional...but if it helps what the hell.)
8- Power on phone.
9- IF the phone prompts you to go online in any way Select NO. (or if it says do you want to activate Offline mode say YES)
10- Press Options key when you get to the home screen and select "Content to offline mode"
11- Make sure "Offline" is displayed in top left corner near where the signal bar usually is. ( if it doesnt say "Offline" press the power button briefly, and select "Offline" (should be underneath the "Pager" profile)
12- Once you have made sure your phone and applications are in offline mode - Power off phone using Power button.
13- Remove battery
14- Again to make sure phone has no residule power hold down power button without any battery or cards inserted.
15- Re-Insert SIM card, Memory card and Battery.
16- Power on Phone.
At this point the phone should start up as per normal, I knew it was working straight away for me because my SIM card prompted me for a pin number. (which happens normally for me when I turn on my phone)
After the phone is ready, i just put my phone back into online mode by selecting my "general" profile, and put my content back online.
Please note: This is what worked for me. Results and Mileage may vary.
It seems the issue is that the phone startup is being held up or stopped due to Programs or Applications tring to go online.
For me I suspect it could have been the Facebook App due to the problems i had before powering off my phone the first time.
I am going to put my Content to offline mode if I need to reboot my phone again, at least until nokia pull up their socks and release a fix for this.
Side note: my N97 is also running Version 11 Firmware. ( not that it may make a difference)
Good luck to all with same problem, hope this works for you too.
Had the same problem but I just removed the extra memorycard and formatted it on my computer before I put it back...
after a few days trying without micro sd inserted
the result is, n97 still stuck in white screen nokia logo
it happend always if i turn off my phone without sign off the facebook app widggetz..
here is how to crash your phone
put facebook widgetz on nokia standby screeen
and then put it online mode
klik the facebook app
just do anything in your facebook for check it already connected
klik end key
now turn off your phone without sign out the Facebook
turn on again
and boom your phone will stuck on nokia white screen logo
and it will never boot forever..
sometime when you take off the batery and reinserted again it can boot normaly but the percentage is 20% only..
soo if your n97 can boot normaly after FB "accident" that mean you lucky and i sugest you unistall your FB ASAP before n97 stuck again on white screen nokia logo..
is anyone have problem like mee??
i like to hear another opinion...
i think nokia already knew this problem, that way when you check ovi and your phone set to nokia n97 the facebook app is missing...
my firmware is v11 already

White Screen after start up chime and Apple logo, any common issues/reasons?

Hi all,
I have a 2011 quadcore i7, 4GB RAM MacBook Pro which has recently and suddenly developed this annoying fault. A perminant white screen after the Apple logo and spinwheel. I have removed the hard drive (from my early 2011 MacBook Pro) and did a clean install of Lion (10.7) and I know the harddrive is fine and functional as my Mac Pro is able to boot from it and works perfectly, put the same drive back into the MacBook Pro and same, start up chime - Apple Logo - Flash, screen stays white. So its not Harddrive and most likely not a software problem (as the drive has been whiped and OSX reinstalled.) Any thoughts that it may be a bust motherboard or graphics card?
Already tried:
Safe Boot
Single-user Mode
Verbode Mode
Resetting the NVRAM/PRAM
Wiping and installing OSX
Disc recovery
Internet Recovery
Many thanks in advance

Hi all,
I have a 2011 quadcore i7, 4GB RAM MacBook Pro which has recently and suddenly developed this annoying fault. A perminant white screen after the Apple logo and spinwheel. I have removed the hard drive (from my early 2011 MacBook Pro) and did a clean install of Lion (10.7) and I know the harddrive is fine and functional as my Mac Pro is able to boot from it and works perfectly, put the same drive back into the MacBook Pro and same, start up chime - Apple Logo - Flash, screen stays white. So its not Harddrive and most likely not a software problem (as the drive has been whiped and OSX reinstalled.) Any thoughts that it may be a bust motherboard or graphics card?
Already tried:
Safe Boot
Single-user Mode
Verbode Mode
Resetting the NVRAM/PRAM
Wiping and installing OSX
Disc recovery
Internet Recovery
Many thanks in advance

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 frozen white screen after cancelled wifi system update

My iPod Touch 4g has a frozen white screen after cancelling wifi update to ios 5.1. My update bar was frozen middle way through when doing wifi update to ios 5.1. So i reset ipod and it displayed an apple logo which faded into a white screen. not jailbroken.

I let battery drain, plugged into computer but when it booted up it booted to an apple logo with lines across the screen. It is frozen. iTunes did not recognise, it never showed up on iTunes. It is fading into a white screen.

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.

Menu will not loop and reverts to a white screen after 30 secs

I'm using Encore CS4 to create a picture DVD (a la Ken Burns!). I used the generic Beach background under the travel tab for the menus because I thought it was fitting. Anyway the duration of the menu is 30 secs. I can not for the life of me figure out how to change the duration. The "loop forever" button is disabled when I click on the menu background. Even if I change the duration time it will always go to a white screen after 30 secs (the audio will continue to play however and the pictures I used for buttons are visible)
Any suggestion or ideas on why this is happening? I checked and as far as I can see there are no overrides anywhere in my project. Everything I've found online stated to click the loop forever button...but that isn't an option.
Any help is greatly appreciated. Thanks in advance!

Tye,
One thing to think about, with regards to your Audio. You might want to make sure that you being with a fade-up and end with a fade-down. That way, should it loop, you do not get a noticeable cut in the Audio. Now, your user will probably have chosen a Button and activated it before, but should they have not, the music "appears" to flow. I normally use the same music for all Menus, and these little pieces contain a lot of repetition in them. That helps to create the appearance that its the same piece that plays THROUGH all Menus, when it's really just one separate piece for each. The pieces are such that you can jump into, or out of, each and one has to listen carefully to tell that it's not continuous. I keep dozens of these little pieces handy, or create new ones with the same characteristics, in SmartSound. You just have to choose the right compositions.
Good luck,
Hunt

[T60] White screen after password entry during boot up

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