White screen at log in

Hi,
Just converted from 10.6.8 to 10.8.2 and twice when computer has been put to sleep either by just walking away for a while or purposefully sending it there "Sleep" on menu bar, when I came back I was presented with either a full black or as today white screen. When I moved the mouse I got an effect I can best describe as what you see with an eraser function where the track of the mouse removes that part of the overlying screen and I can see the grey screen underneath with the Apple logo, and request for a password, which when I expose enough of allows me to sign in. It has not happened where I see my desktop screenunderneath. I cannot imagine this is a deliberate effect, so I have no clue what or why this happened.

Bad upgrade, it occurs.
Step by Step to fix your Mac

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White screen after logging in on OSX 10.9.2

This morning an application on my Macbook Pro kept prompting for a folder after giving a write permission error. I closed the program and tried to restart it with no luck. I then restarted and after selecting my user and entering my password, all I get is a white screen with an arrow cursor. If I hit the power button, I get a prompt to Restart, Sleep, Cancel or Shut Down. That's all the response I can get no matter which user I log in.
Sorry, I'm not that familiar with what specific model I have. Its a 15 inch Model 1286 with a 2010 copyright. OS is Mavericks which I've kept updated, so its likely 10.9.2. It originally came with 320GB drive as I recall which I replaced with a 750GB about the time when I put OSX 10.9 on it.
Fortunately I backed up with Time Machine just yesterday. Any help before I spend the next day reinstalling and recovering?

BozBrak,
you can try this: boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode. Are you able to get past the white screen now?

After typing in password when logging in, I get a blank white screen... what to do?

My macbook air is not even a year old... Lately, logging in has been slower than usual and now when I log in, all I get is a blank white screen! Help!

My macbook air is not even a year old... Lately, logging in has been slower than usual and now when I log in, all I get is a blank white screen! Help!

When I turn my computer on,it asks me to log in, and when I do, it is a white screen. HELP!

When I turn my computer on,it asks me to log in, and when I do, it is a white screen. HELP!

Welcome to Apple Discussions
You may have a corrupt System File in your OS on on your HD. Try doing a repair (Command-R) boot running disk tools repair disk and repair permissions on your boot volume. If that fails do a reinstall of the OS.

White screen after I log in, what do I do?!?!

When I turn my Mac on, it boots up just fine. Upon entering password to log in, I get a white screen that won't go away. I can see my cursor but that's all... HELP!!!!

Hello kdeutsch86,
The article linked below details some useful troubleshooting steps that can also help resolve login issues.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Cheers,
Allen

Unable to log in from safari. I just see a white screen.

I have tried logging in to CC using Safari on my Mac Pro with no luck. Just a white screen. Any suggestions?
Thanks for all replies.

Kyboone21,
Please refer to the below forum post as this may help:
https://forums.adobe.com/message/4396277
You may also contact Customer/Chat support:
http://www.adobe.com/support/download-install/supportinfo/
Let us know if this works,
Regards,
Gurleen

Why when I log in to my virtual classroom with the admin account it appears a white screen?

The meeting room is: meet18787284.adobeconnect.com
The admin account it is e******@*******.net
It appears a white screen like the image I attached
Which number can i dial to have asistance from México?
The number in the oage is 800-422-3623 i tried with 00,01,001,+1 and it didn´t connect kepp saying the number doesnt exist

The link shown in your image is to the Service Plan page for the Connect account (which most likely shows as a white page or throws an error). The server URL you listed above is active and working, but you may just need to log into the server, and then select the desired meeting room. Meeting room URLs should have something after your server URL, for example: meet18787284.adobeconnect.com/myroom
I've also edited out your email, as this is a public forum, and we don't want your information to get misused.

Why is my screen all white after installing OS X Yosemite? No place to log on to my computer, only. White screen??

I Installed OS X Yosemite on my IMac and once it restarted I only had a white screen, no place for me to log on. I called Apple Support & they told me to rest all it again, I still have only a white screen with no box to enter my passcode,

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.

TS3824 My MacBook Pro freezes with a white screen after I log in.

MacBook Pro freezes with a white screen after I log in, support says to download an update, but if it
s frozen, how do I update?

Thanks for posting back your solution. It will help others w/the same problem.

T520: White screen a few seconds after logging into Windows

Starting yesterday, when I log into my computer 10-15 seconds after loading the desktop the screen goes completely white and is unresponsive. The only thing that makes it go away (sometimes) is ctrl-alt-del and telling the system to log off. As soon as it starts to try to log off and asks me if I want to force close certain programs I have to cancel the whole log off, otherwise I'll just end up logging in and the whole process starts over again. I've noticed that it seems as though a slideshow of my desktop background starts up and then just crashes, because occasionally that image appears before the white screen of doom.
Any ideas?
My specs:
Windows 7 Home Premium x64-bit
Intel i7-2760QM @ 2.40Ghz
8 GB RAM

There are malware programs that cause those symptoms. (like Trojan Reveton) First, I would download an offline virus scanner. I tend to use Microsoft offline defender, because it tends to work and it's free. You will need to download the ISO and burn a disk. You need to download either the 32-bit version, or, more likely, the 64-bit version, depending on your OS. You then boot from the disk you created and run the long scan.

I can't log on to my I mac Desk top, every time I switch it on all I get is a white screen with the apple log , can anyone help pls?

I can't log on to my I mac Desk top, every time I switch it on all I get is a white screen with the apple log , can anyone help pls?

Hello,
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
If 10.7.0 or later...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partitirion & use Disk Utility from there.

Logs out to white screen

Hi,
Our iMac is 8 months old. We installed Mountain Lion when it first came out. Recently when my wife or I log out of our accounts, about half the time it goes to a white screen. The only way to proceed from there is to hold down the power button until the machine shuts down. On restart everything seems fine.
Any suggestions?
Thanks,
Paul

Could possibly be attributed to a third-party app (MagicPrefs had that effect at sime time, but I guess they have an updated verson by now).
If you boot in Safe mode (holding Shift-key down) and you are able to shut down properly it would probably imply such a scenario.
If you´re used to never quitting any programs per se (only windows), the total shutdown process may take some time by the sheer number of processes to be closed (but I guess your problem is that it never shuts down properly in the end).

Log out from account to a white screen

Mid 2010 Macbook Pro
OS X 10.9
Hi there,
I upgraded from Lion to Mavericks when the new OS came out, but the problem that this is regarding has only started to occur this last week so I'm not entirely certain that they are related. All the same, I would appreciate any help or guidance to the problem at hand.
When I leave my laptop unattended, I always log out from my account by clicking on the account feature at the top right hand side of my desktop. Previously, this action has always worked to log me off from one account and bring me to the menu where you can sign back in (w/ password) or log into a guest account. However, starting this last weekend, when I use this same feature my screen seems as though its logging out, but then loads a white screen. There is not a loading icon, or any indication that it is processing a command. I've left it this way for up to 30 mins to see if it was simply slow, but this is not the case. It remains white and my only recourse is to hold down the power button and boot the system. When it turns back on it brings me to the normal log in screen and seems to work normally until I try this action again, which it then repeats the same process.
Now, the only unusual action to have occured before this happened this past weekend, and seems to be when this all started. I logged out as I normally would when leaving my laptop, it had the normal white screen before bringing up the sign in menu, but I closed it shut before the log in screen came up. I fear this may have been my undoing because when I returned I had to boot the system as I am doing now.
Help me, Apple Support Communities - you're possibly my only hope.
-Mav

Should this be of any further assistance, the problem is the exact same even if I use the LOG OUT feature from the Apple menu at the top left of the desktop.

Can't log in white screen with flashing file and Question mark

I've been have trouble with getting on line and screen freezing up. Now I have a solid white screen with a icon of a file and question mark on it flashing. Iv tried unplugging and resetting with no luck.

Have a look at > A flashing question mark appears when you start your Mac
Dennis

When I login to second user account I get a blank white screen.

Just updated to 10.8.3, was also having issues that seemed to be related to Spotlight and TM backups. Issues on my main user account seem to have been resolved, but I have not reactivated Spotlight or TM yet.
When I try to login to my wife's user account, it just hangs on a white screen. I've tried repairing user permissions, and also resetting PRAM and NVRAM. Disk verify checks out fine.

Library/Fonts:
[A hole bunch, removed to shorten post...]
Does the problem account also have a lot of fonts in the home folder? That could be the reason for a login failure. Otherwise see below.
Please read this whole message carefully, especially the warnings, before doing anything.
1. The changes to your configuration suggested here should be considered provisional; they may not solve your problem, or they may remove functionality that you find useful. If a third-party system modification that you want to keep is causing the problem, seek help from its developer.
2. WARNING: Back up all data now if you haven’t already done so. Before proceeding, you must be sure you can restore your system to its present state, even if it becomes unbootable. If you’re not sure you can do that, STOP — DON’T CHANGE ANYTHING. If you’re dissatisfied with the results of the procedure suggested below, restore from your backup. I will not be responsible for the consequences, and I will not be able to help, if you ignore this warning.
3. You should either remove or update the following system modification(s), if an update is available from the developer:
N/A
and definitely remove at least the following:
Logitech Control Center
† PeerGuardian
Hotspot Shield
† Conduit
4. Whatever you remove must be removed completely, and (unless otherwise specified in this message) the only way to do that is to use the uninstallation tool, if any, provided by the third-party developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job. I can't be more specific, because I don't install such things myself. Please do your own research.
Here are some general guidelines to get you started. Suppose you want to remove something called “BrickYourMac.” First, consult the product's Help menu, if there is one, for instructions. Finding none there, look on the developer's website, say www.brickyourmac.com. (That may not be the actual name of the site; if necessary, search the web for the product name.) If you don’t find anything on the website or in your search, contact the developer. While you're waiting for a response, download BrickYourMac.dmg and open it. There may be an application in there such as “Uninstall BrickYourMac.” If not, open “BrickYourMac.pkg” and look for an Uninstall button.
Again, please don't ask me to do this research for you. You can do it better than I can, because I haven't installed the product and I may not even know what it is.
If you can’t remove software in any other way, you’ll have to erase your boot volume and perform a clean reinstallation of OS X. Never install any third-party software unless you're sure you know how to uninstall it; otherwise you may create problems that are very hard to solve.
WARNING: Trying to remove complex system modifications by hunting for files by name often will not work and may make the problem worse. The same goes for "utilities" that purport to remove software.
5. I recommend that you never reinstall the modifications marked with a dagger (†) above, if any. If your problem is resolved after uninstalling all the above modifications and rebooting, but you still want to use some of those not marked with a dagger, you can experiment with putting them back, one at a time, testing carefully after each step. Keep in mind that system modifications may be incompatible with each other or with future OS X updates, so it may not be clear which one is at fault.
6. If you still have problems after making the suggested changes and rebooting, post again. Remember: if you don’t like the results of this procedure, you can undo it by restoring from the last backup you made before you started.
You installed the Conduit spyware. To remove it, back up all data, then follow the instructions on this page:
Help Center | Community Toolbar
If those instructions don't work, proceed as follows.
Triple-click the line below to select it:
~/Library/Application Support/Conduit
Copy the selected text to the Clipboard (command-C). From the Finder menu bar, select
Go ▹ Go to Folder…
Paste into the box that opens (command-V), then press return. A Finder window should open with a folder named "Conduit" selected. If it does, delete the selected item.
Repeat with this line:
/Applications/Toolbars
Now you're deleting a folder named "Toolbars". You may be prompted for your login password. Next, copy this line:
/Library
Select Go to Folder… again and paste. Don't delete the Library folder. Delete only the following items inside it, if they exist.
Application Support/Conduit
InputManagers/CTLoader
LaunchAgents/com.conduit.loader.agent.plist
ScriptingAdditions/ct_scripting.osax
Close the Finder windows you opened. Log out and log back in.

White screen at log in

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