Blank "Log In" screen pops up randomly

On my iPhone 4S, a blank screen, with a header bar that says "Log In" and "http://www.apple.com" above that, has been popping up randomly, usually shortly after opening an app. Even if I let it sit there, it never loads anything–it just stays white. It's got a Cancel button on the upper right, and after I click that, everything continues as normal, but the screen popping up is getting quite annoying since it usually happens several times a day. Anyone know what's causing this or how to fix it?

This happens to me also. It starting popping up when I tried to log into AT&T wifi outside my work office. We have an AT&T corporate office below us. When I saw that there was no passcode for the wifi I click on it and ever since then that windows just pops up everytime I go outside for break or lunch. I just hit cancel each time.
It's a pain but haven't figured out the solution yet.

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My iphone 5c is having trouble connecting to internet and staying connected, the time and date are messed up and a black screen pops up randomly. what can i do?

i need help fixing these problems with my iphone 5c. When i connect to wifi it connects then minutes later disconnects and makes me put in my password again. i have to change the time every hour or so because it stops at a certin time. when im trying to use my iphone sometimes the screen turns black and it doesnt turn back on for a few seconds. please help
thanks, Kim Wibbels

The people having problems not connecting without AC power was from the last OSX update to 10.5.8, this problem has since been resolved with an Airport Client update.
Your profile shows that you are running 10.5.6... I would suggest updating you software to the latest 10.5.8 as this fixed some Airport issues.
You may want to unplug the router, let it set a minute the plug it back in.
Is your Powerbook still having these issues? How long has the powerbook been experiencing this problem?

Blank log in screen (blue screen with clouds)

Hello,
I have already scoured throughout the forums and tried every solution I have seen to no avail.
I am running Windows 7, 32 BIT. Internet Explorer 11
The following is a list of procedures I have already tried:
-tried to register the javascript .dll files (both succeeded successfully but issue still persists)
-Tried to change permissions in c:\programdata\skype and in program files
-Uninstalled/reinstalled
-Downgraded IE to 10, then 9, then 8
At this point, not sure what else to try. Please advise.
Thanks
Solved!
Go to Solution.

You can try with this "legacylogin" workaround, which may enable you login with Skype name, but not with Microsoft account.
Quit Skype. Make sure that you don’t see any Skype.exe processes in Windows Task Manager. If necessary, then stop these processes.
Open this folder on your computer:
C:\Program Files\Skype\Phone\
You should see there the Skype application file (Skype.exe). Right click on the Skype.exe file and select: Send to – Desktop (create shortcut). Right click on the newly created shortcut and select Properties and then the Shortcut tab. In the Target field you will see now:
"C:\Program Files\Skype\Phone\Skype.exe"
Click with your mouse on the text in the Target field and move your curser one space after the last quotation sign and add the text /legacylogin. The text in the Target field should now read:
"C:\Program Files\Skype\Phone\Skype.exe" /legacylogin
Click OK to save the changes. Start Skype using this new shortcut.

My MPB randomly returns to log in screen

I have a:
Model Identifier:
MacBookPro6,2
Processor Name:
Intel Core i7
Processor Speed:
2.66 GHz
and am currently running 10.6.8...
I use my laptop in lectures a lot and it seems that randomly (usually when I'm typing quite a lot) the whole screen rotates as a cube and returns to the log in screen asking me for my password.
Once I log in it rotates back exactly where I left off, only there will be a chunk missing from audio (if I'm recording)
It is really anoying, if anyone has any advice how to stop this it would be much appreciated...
(It began doing it when I uprgaded to Lion so I reverted to Snow Leopard but now that I'm back at university the problem has reappeared even in Snow Leopard... just not quite as frequently as before.)

Sorry.
Yes I can log in but as soon as I do the same malware message pops up then my mac resets back to the log in screen and this loop just keeps repeating itself. Log in, when I do at it loads I get the malware sign, then it crashes and returns me to the log in, repeat. After logging in, my mac is unresponsive so I can't seem to do anything before it goes back to the log in screen.
I'm able to use my mac as normal when opened in safe mode, and I have tried turning off the log in password screen. Then when I try to use my mac out of safe mode the same message comes up then it just crashes, reloads then crashes again.

My iPhone 3Gs randomly shutting off at any given moment. I could be in the middle of a text, a call, or doing some games and it'll just shut off. Now here's the unique part. When I go to turn it back on, the apple loading screen pops up but it takes some

My iPhone 3Gs randomly shutting off at any given moment. I could be in the middle of a text, a call, or doing some games and it'll just shut off.
Now here's the unique part. When I go to turn it back on, the apple loading screen pops up but it takes somewhere from 3-5 minutes for it to boot up. Then the lock screen with the time and whatnot shows up. From this point on, my iPhone has a chance to shut itself back down and I have to repeat the process over and over again. Most of the time the lock screen flashes and then goes straight to black (shut down) but sometimes I can make it a few menus before it shuts itself down.
The only way to keep the iPhone on is to plug it into a charger of any sort. I'm fairly certain it isn't a battery charge issue because this happens at any % of power and sometimes my iPhone can use up all of its charge and not have this happen while other times I can be at 90-100% and it could randomly shut itself down. What can I do in this situation if some has some solution to this problem please let me know on [email protected] Thanks!

Not sure if this Term is Relevant towards an iPhone but, my iPhone won't Post unless if it's plugged into a Charger.

I cant use facetime. but my sister can. we share the same account for itunes.but when i go to face itme and click on create a new account a blank screen pops up. what do i do?when i go to make a new facetime account nothing comes up

i cant use facetime. but my sister can. we share the same account for itunes.but when i go to facetime on my ipod touch and click on create a new account a blank screen pops up and the only thing it says is cancel and account. what do i do?

Please follow these directions to delete the Mail "sandbox" folder.
Back up all data.
Triple-click the line below to select it:
~/Library/Containers/com.apple.mail
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A Finder window should open with a folder named "com.apple.mail" selected. If it does, move the selected folder — not just its contents — to the Desktop. Leave the Finder window open for now.
Quit and relaunch Mail, and test. If the problem is resolved, you may have to recreate some of your Mail settings. You can then delete the folder you moved and close the Finder window. If you still have the problem, quit Mail again and put the folder back where it was, overwriting the one that may have been created in its place. Post your results.
Caution: If you change any of the contents of the sandbox, but leave the folder itself in place, Mail may crash or not launch at all. Deleting the whole sandbox will cause it to be rebuilt automatically.
*If you don't see the contextual menu item, copy the selected text to the Clipboard (command-C). In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.

I have a mac air and it says my star up disk is full, now when I log in it just has a blank white lit screen and I cannot go further

After logging in, theres just a blank white backlit screen and I cannot go further. It also has been showing on the screen
that the startup disk is full. I already tried diagnostics and it says hardware is fine.

You will have to erase your drive because it has a corrupted directory resulting from allowing the drive to become full.
Install or Reinstall OS X from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard 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.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.

Random black screen after log in screen

I have a week old top spec rMBP, I migrated my settings from my older MBP using migration assistant without any issues, my problem is random which makes it difficult to describe, when I reach the log in screen and insert my password click enter, sometimes the computer opens normally and at other times I get a brief flash of white which looks like a horizontal line but it is very rapid so I may be wrong, and then the screen goes black and nothing happens, no menues or options, all I have is the power button to shut down. I restart and it can take a variable number of attempts before it will get beyond the log in screen, 6 attempts it the most so far !
I have an appointment at the Apple store tomorrow but just wanted to know if there was something I was doing wrong to save the journey, the machine works fine once up and running, I have done the disk and permissions repair via disk utility but it does not seem to make an difference, there used to be some resets using various key combinations and there was the remove the battery reset option but of course that is no possible now.

You could try two things (but I doubt that either will work).
Reset PRAM and NVRAM.
Reset the SMC.
Give them a try as last resort. As I said, I doubt that either will fix your problem, but it's worth trying.
Clinton

Help!! I changed my log in screen to show a blank name and pw. Now I cannot open the computer???

Help!! I changed my log in screen to show a blank name and pw. Now I cannot open the computer???

1.Turn on the computer and when you hear the startup chime hold CMD+S. This boots the computer into single-user mode, giving you root access.
2.Once single-user mode loads (it looks like a black screen with white text) mount the hard drive. So at the prompt type in:
/sbin/mount -uw /
3. Now that the drive is mounted we can edit the file system. We need to delete a file that tells your computer that you have completed setup. So type in:
rm /var/db/.applesetupdone
4.We need the system to reboot so it can check for the file and not find it. Type in:
reboot
5.Continue setup
Be sure to select “DO NOT TRANSFER MY DATA”.
6.Finish setup and login.
7. Go to system preferences and edit that account so it HAS A NAME.

When I try to access itunes store on my computer, the screen pops up and then goes blank...anyone know why? I don't have any pop up blockers on

When I try to access itunes store on my computer, the screen pops up and then goes blank. I don't have any pop up blockers on. Anyone?
thanks

Hi Jennifer, I'm having the exact same problem. I have tried uninstall. reinstall. Change accounts. Nothing works. My songs are still there but when I click on itunes store the screen is blank. ??? Come on windows people how do we fix?

Randomly quits and returns to blue log-in screen

At random times the grey rotating gear will come up, everything will quit, and I'll be back to the initial log-in screen. Seems to happen when I have multiple applications open.

Make sure you've emptied your Trash. Extra RAM will be a wise addition.
What Application are you running when this problem occurs? Is it the same one every time ?
If you're familiar with the Console application then launch it and post a segment of its line by line display just before your system requires a new login. Do this immediately after you login.
Are you using Fast User switching and if so do you have other accounts logged in ?
If you have another account defined on your system then login to it and perform same things you did under the account you experienced your problem and post back if problem persists.
Do you have any external devices connected to your iBook? If so disconnect them and see if problem goes away.
Are you running off the battery or the main line power supply? What is your battery charge level?

Firefox does not enlage images on ebay. A new blank screen pops up.

When on ebay looking at a listing I want to enlarge the image for a better view. A blank full screen pops up with nothing on it apart from a search bar at the top.

"Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now" 
"Remove the Cookies" from sites that cause problems: Tools > Options > Privacy > Cookies: "Show Cookies" 
 
Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). 
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]] 
 
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. 
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions. 
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

Log in screen for Microsft is blank w/error msg

I have the latest updates, that is not the issue. The log in screen for Skype accounts shows up fine but not for Microsoft accounts. IDK what to do and its been pissing me off for ages now. Any suggestions?

EnviedLove wrote:
Yea I was trying that but now I'm having another set of issues. I need service pack 1 and 2 for Vista but its not acknowledging that I sp1... I even downloaded Hotfix like ppl suggested but thats not working either. I am about to give up and get oovoo (ugh). I should've never let it update.
Yes. You need to update your Vista to Service Pack 2.
http://windows.microsoft.com/en-us/windows-vista/learn-how-to-install-windows-vista-service-pack-2-s...

I cannot log onto sites that require my log in and password. I get no error message, fire fox just goes back to the same empty log in screen. this problem is not limited to one site. I reloaded firefox with same results.

When i type in my log in and password and enter, the site either returns to the blank screens or does nothing. This is not limited to one or two sites. all of my financial institutions, electric company, insurance companies, even trying to register here so that i could ask this questions. In this situation, when i hit the register button, nothing happend, its as iff the button is inactive. i had to go to IE to register and post this question. I just tried to enter my new log in and pw on the screen in fire fox and nothing happens. Some sites behave differently when i hit the submit or log in button. the information seems to be transmitted but the screen comes right back to the original log in screen with blank fields. there are no error instructions that something does not match or is missing. then i go to IE and it works.
This started a few weeks ago. I cant identify anything that was added around that time but i tried a system restore and that did nothing. i deleted fire fox and downloaded the latest version 3.6.13 and it is still happening

This issue can be caused by corrupted cookies.
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"
*http://kb.mozillazine.org/Cookies

Will not boot up to log in screen

will not boot up to log in screen when powered up, all I get is a grey screen with apple logo in middle and spinning timer
I have tried resetting SMC
I have tried starting up in Safe Mode (it won't do that either)
I have gotten into disk utility to repair disk
I have tried resetting PRAM
nothing... we are on a network in a school district so my next step is to re-image it but wondering if there is something else I should try first
if not then how do I backup files that are needed before I re-image
thanks, Cindy

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
     a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or 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.

Blank "Log In" screen pops up randomly

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