IMac white screen after Lion system install

Two days ago, iMac froze with the dreaded white screen. Unplugged all external hardware. Restart with "Command R", fixed all permissions and verified the disk. Cold start locked at white screen. Reinstalled Lion. After the reinstall the system did restart on its own and everything looked normal. Shut down and did a cold restart and the white screen is back. Shut down and cold start with "Command R" very long process but Utilities finally opened. But what to do next?
This iMac has had the recalled Seagate hard drive replaced by Apple, although some years ago.
Thanks for your thoughts, Bill

Page 3,
After writing the above I went in and pressed the ON/OFF button, it went black and shut down. Waited 10 seconds and pressed the ON/OFF button and instantly my desktop and all folders were back. Everything looks normal.
Now each time I have verified permissions there has been a file that can not be fixed. A "SUID ..... " file. Have to do with anything?
I am going to shut her down one more time wait the 10 seconds and Start.... locked in white screen.
Restart with "Command R", and now it appears hung up on the Apple and spinner for a very long time and Utilities finally opened. Although it will take some time before it loads enough to make things selectable. When that happens I will do a Restart from the pull down Apple menu and see what happens.
Looks more and more like my Authorized Apple Store is about to get a visit.

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Imac white screen in lion... help

Hello
Yesterday, I switched off My imac when it being in sleep mode.
Next morning, when I switch on, my computer stop turning on, on white screen!!!
Nothing helps. I unplug everything from it, and it the same history.
After couple of hours, I format all hdd, and install the new copy of lion.
And the same story. White screen after turning on.
But strange thing is these, that I can turn THE SAFE MODE!!!
And everything works great in that.!!
Next step what I tried to do, was open new copy of lion from external hdd (usb). And thats the same bad story..
Can someone help me what can I do?
I, am from poland, when in my town, no one can reapir these kind of computers, only one official ressseler in my country, but they are very very very expensive, and I have not a guaranty!!!
Very thanks for response
P.S sorry for my bad english

I'be the same problem. I updated the efi or wifi and now I'm permanently on the white screen with grey apple icon and moving circle. Can somebody please help?

White Screen After Snow Leopard Install

I just installed Snow Leopard on a late 2007 MacBook. Verified the disk before and got all updates after. Now, whenever the machine goes to sleep, it wakes up frozen. Restarting produces a plain white screen. If left, it will eventually show a folder with a question mark, like it can't find the startup disk. It needs to be restarted several times before booting up again. The startup disk has been selected in System Prefs more than once.
I've found several references to this being an old problem, but I have not found a solution. Has this problem been solved?

R C-R wrote:
I suggest that you run the Apple Hardware Test in extended mode to see if it finds anything wrong with the hardware.
Thanks, I'll try that. But I doubt this is a hardware issue. I'm pretty sure this is a Snow Leopard issue, since many others have had this same problem after upgrading.

IMac white screen after sleep since latest update

Ever since I updated our iMac to 10.8.3, we get a blank white screen when we wake it from sleep. We can "wipe away" the white to reveal the desktop by dragging the mouse across the screen. It appears to be a video memory issue.

I have the same problem ever since I updated to 1.8.3.
Have any of you heard about a possible way to fix this?

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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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.

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SOLVED-Install not booting on Intel Imac-white screen

I just tried to install Archlinux with the new install disc fo the fifth time, without succes.
When I restart the computer all i get is a white screen.
Restarting the install disc, mounting the harddisk partitions and arch-chrooting I can get into the installed linux, I can do everything even install new programs and get these working but when starting normally it's the white screen again.
It is an Intel Imac dual core with 27" screen on whitch the old install disc did it's work flawlessly.
Any idea where I can start searching?
Last edited by mianka (2012-08-03 14:14:52)

How long do you wait on that white screen?
I have arch on two different macs - and early iMac, and an early macbook. They both have long delays on the white EFI screen.
There are allegedly ways to fix this but I have never bothered as I do not reboot either of these machines that often. Many reports claim it should be a 30 second delay, but on the IMac I'm typing from now (in arch) it is at least 2 minutes. Whenever I need to reboot this machine, I just type reboot, then go for coffee.

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.

[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.

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

I got a white screen after cleaning itouch, I got a white screen after cleaning itouch, I got a white screen after cleaning itouch, I got a white screen after cleaning itouch

I got a white screen after cleaning itouch. the itouch will still sycn & registars on my computer - is there something that i can do?

Hello!
This usually means some software on the phone went catastrophicly wrong thus the need of partial erase. Could you send me a private message of your palm profile email address? Have you installed anything to the phone outside our app catalog? Keep me posted.

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.

I have an iMac with os x lion, I installed windows 7 in the partition but I cant use internet there.

I have an iMac with os x lion, I installed windows 7 in the partition vut I cant use internet there. In device manager the ethernet controller appears in yellow, what I have to do? A specifically process or download a driver, wich driver?

Eder Ximenes wrote:
Hi! You may reinstall the driver manually:
by Boot Camp - Installation & Setup Guide (OS X Lion) :
To reinstall a specific driver:
If you need to reinstall specific drivers, you can install one driver at a time. For example, if your Mac’s built-in camera isn’t working, you can reinstall just the camera’s driver.
Individual drivers are in the Drivers folder on the CD, DVD, or external disk with the Windows support software.
1 Insert the CD or DVD or connect the external disk with the Windows support software.
2 Quit AutoRun if it opens.
3 Using Windows Explorer, locate the driver that you want to reinstall.
4 Open the driver to start the installation.
Your drive (Network's drive) is in this location:
WindowsSupoport -> Drivers -> Broadcon -> BroadconNetworkAdapterWin7_32 (depends of version of your windows!)
In my case i need to install manually the drives for Net and sound!
Sorry my english, i'm brazilian!
I hope I´ve helped!
You have not, the OP has Lion so no disk, and you can't re-install until after you install, which hasn't happened yet.
To the OP, use BCA to download the Windows Support Software, follow the instructions to install it in Windows.

Stuck on white screen after login

My 13" macbook pro is stuck on the white screen "after" the user login page. It started happening after installing the latest update then gave me a "start up disc is full error also. I know to clean up unnecessary files but can't do that when it's stuck before I can get to a point where I can access them. Any Ideas and help would be great.
Thanks
RH

Try a PRAM reset:
Power off, power on holding the following keys:
OPTION+COMMAND+P+R
Continue to hold thee keys till you here the start chime 2 times hen release.

IMac white screen after Lion system install

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