White screen and virtical blue lines

I was playing Skyrim in bootcamp when my computer stopped working, I saw a brief error message which I didn't get a chance to read then the computer turned its self off. Every time I try to restart the computer I get a white screen with vertical blue lines, then after a minute it goes grey. I have followed advise given to others with similar problems. Diagnostics does nothing, I've only managed to successfully run in safe mode once, but it will not run again. the only thing I am able to do is select the start up drive at the beginning using the option key but that's as far as I can get.
running an imac 27" late 2009 upgraded to maverics. boot camp is windows 7.

Hey db8179,
Welcome to Apple Support Communities.
The article linked below provides a lot of great information and troubleshooting suggestions that can help you resolve the gray screen startup issue with your iMac.
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem." - Apple Support
Cheers,
-Jason

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IMac 21.5" boots to white screen with vertical blue lines/bars then locks up

iMac 21.5" (mid 2010) Intel Core i3 4GB RAM with Radeon HD 4670 boots to white screen with vertical blue lines/bars:
Then it locks up after a few minutes, at which point the screen changes to white with these blue symbol things all over the screen:
If boot to Safe Mode, it still has the white screen with blue lines/bars, but eventually loads the login screen and I can successfully login and get to the desktop, but even that has the bars/lines.
Eventually, after enough restarts or hard shutdowns it will boot normally with no video/display issues. I've run disk checks, did the SMC and PRAM resets, checked logs (that I know of), and have even taken it completely apart, cleaned it out, reseated everything, put it all back together, but no change. I've read a few other posts about similar issues (but not quite the same video issue as this) where people had the logic boars replaced or reinstalled OSX, but that didn't always fix it. Any ideas? Has anyone seen this issue before? Thank you.

crw4096 wrote:
Is this a dead disk?
Very well could be.
If you can not startup from the Hardware Test, in Safe Mode or from > OS X Recovery as discribed in the Support article's.
Dig out the original Install Disc set that came with the iMac and do one of the following.
1. Attempt to Repair the Hard Drive.
Start from your Mac OS X Install disc: Insert the installation disc, then restart the computer while holding the C key.
When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (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.
Click the First Aid tab.
Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
Select your Mac OS X volume.
Click Repair. Disk Utility checks and repairs the disk.
2. Run the Hardware Test from the second Install Disc.
1. Insert Disc 2 and Startup holding the D key.
2. Select the Extended Hardware Test.
Then if you still can not get anything going, you need to contact your Local Apple Store or AASP and make a Service appointment.
see > Apple - Find Locations

Unresponsive screen and red/blue lines.

Today I took my phone off the charger and as I was trying to access my phone the screen was unresponsive. Then I noticed thin red and blue lines that occasionally show up. I researched this problem, but no help. I restarted my phone, factory restarted my phone, took out and put in the micro sim, and took the screen protector off. Any suggestions before rushing to the Apple Store or phone repair shop? By the way this is an iPhone 5 thats almost 2 years old.

Do a reboot by holding both the power and home buttons until the apple logo appears, ignore the red slider if that appears. If the problem is still there, visit the Apple store genius bar.

TS1702 My twitter app will open but only to a blank screen and a blue bar, how do I fix this?

How do I fix my twitter app, that only opens to a blank white screen and a blue bar?

delete the app and reinstall

My Ipod was in my back pocket and when I took it out it has a white screen with 3 grey lines going threw it, and not even 5mins before, it was working fine... what could i be? it also isnt hooking up to itunes... please help

My Ipod was in my back pocket and when I took it out it has a white screen with 3 grey lines going threw it, and not even 5mins before, it was working fine... what could i be? it also isnt hooking up to itunes... please help

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

I inadvertantly dropped my iphone 3 and now have a white screen with green vertical lines to the right. It won't sync with itunes due to an error. What can I do?

I inadvertantly dropped my iphone 3 and now have a white screen with green vertical lines to the right of the screen. It won't sync with itunes due to an error. What can I do?

Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.
If it does not resolve the issue, the device is permanently damaged and will require replacement.

Hi, I have an iMac which I just booted up and have a white screen with a blue folder with a question mark blinking on and off. Any help would be appreciated. Tommy

Hi, I have an iMac which I just booted up and have a white screen with a blue folder with a question mark blinking on and off. Any help would be appreciated. Tommy

That means your iMac could not find a system to use for startup. That may mean the internal hard drive has become faulty, or the hard drive mechanism is fine, but the startup volume ("Macintosh HD" unless you renamed it) may have some type of data corruption that makes it unbootable.
First, you should try resetting PRAM
http://support.apple.com/kb/HT1379
and if that does not help, use this procedure to reset SMC (power management). If your iMac is from 2008, this is the procedure for Intel (not PowerPC) Macs.
http://support.apple.com/kb/HT3964
(This forum category is for "iMac (PPC)," so if this iMac is older (with a PowerPC processor), please post back.)
Disconnect all peripheral devices. When you connect it back to power, if you have been using a power strip of some type, try connecting it directly to a wall outlet, by itself (at least initially). Start up with nothing but the power cord connected, then add only standard mouse and keyboard. If it works, run it that way for a while.
If PRAM and SMC reset have no effect, you should insert your Mac OS X installation disc (for the currently installed system) in the optical drive, and restart with the C key held down. This should get you to the Installer screen, where you can run Disk Utility from the Utilities menu.
In Disk Utility, does the internal hard drive appear in the sidebar? If so, select Macintosh HD in the sidebar and go to the First Aid tab. Use Repair Disk. If an error is found, note if Disk Utility was able to fix it or not.
You can then quit Disk Utility and attempt to restart normally.

Sorry for my bad english. My ipod have a white screen and after few secondes somes lines appear

Sorry for my bad english. My ipod have a white screen and after few secondes somes lines appear.

- Try a reet:
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Next connect to computer and if it shows in iTunes restore the iPod.
- If the screen is still white, let the battery fully drain and charge for an hour.
- If still white screen it is time for an appointment at the Genius Bar of an Apple store.
- If not, the try the reset and connect to iTunes and restore. Also try placing the iPod in recovery mode and then restore. For recovery mode:
iPhone and iPod touch: Unable to update or restore

21" iMac getting white screen and does not boot up

Hi All!
This is my first time to post here but have been using Mac OS since 2009.
I am having issues with my Mid 2011 iMac 21". I keep getting a white screen and it does not boot up.
I am a bit technical so I have done all the necessary steps as below:
1. Powercycle the system (Shutdown, unplug for 10 seconds and replug) = No go
2. Reset NVRAM several times = No go
3. Went to Safe Boot = Vertical white stripes on blue screen appears
4. Tried booting on Recovery Disk = Vertical white stripes on blue screen appears
I'm thinking my video card is faulty now.
Any help guys? I hope my hard drive is not fried
What's worse, my 3 year extended warranty just expired last June and it's only been 3 months

First i can't send it back becuase it didnt have a warranty i purchased it on ebay. second the guy didnt send the install disks with it as he promised i have tried to follow up with him with no luck so hes been reported to ebay. and due to current buisiness expenses cant afford the new software. is there anything else i can do to at least boot the thing so i can figure out whats wrong with it. and has anybody experienced this before and if so how was the issue resolved. soooo frustrated as buisiness is at a stand still till this machine works. p.s.it has osx leopard latest version.
Message was edited by: AMILLIANZE

HT1338 i cant get in to os system. the screen just stuck in white screen and apple logo

i can not get in to my os system. the screen just stuck in white screen and apple logo

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 boot failure is to secure your 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 your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into 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.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot 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.
c. 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
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot 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.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot 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 your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot 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, your boot volume is damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot 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 reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your 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 reboot as usual.
Step 6
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a backup.
Step 8
A dead logic-board battery in a Mac Pro can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

My macbookpro 15" screen has vertical blue lines

Hello,
I have a Macbook Pro 15" (mid 2010) 2.53GHz Interl Core i5 running OSX Lion 10.7.4.
Generally the computer and screen are in good condition and have had no damage.
The screen has Vertical blue lines and there is a tint of blue generally. The startup apple grey screen however is perfect, it is only when it enters the login screen that the lines appear. All the colours are off. Other than these lines the computer works perfectly
The computer was used yesterday (09 June 2012) without a problem for approx 1hour. It was then left for the day indoors on a desk out of direct sunlight. The computer was switched on later that evening and the problem started to appear
I have already tried to reset the PRAM and SMC with no affect.
I also read that it may be a cable problem, however as the startup screen works perfectly i question this.
Please can you help!
Thanks in advance,
Alex.

I suggest you take it to an Apple store genius bar or a repair facility for evaluation. This is most likely a hardware problem.
Ciao.

When I power up my mac, I see the white screen and the apple icon. After a few seconds of powering up the screen goes dark. Yet I still can the mouse arrow but nothing else.

When I power up my Imac, I see the white screen and the apple icon. After a few seconds the screen goes dark. I am able to still see the mouse arrow as I move it around. But nothing else. What is the problem and how do I recover?

Try this from another user:
1. Shut the computer down by holding the power button for 10 seconds
2. Restart the computer and press shift at the same time until you see the progress bar start moving
3. Once you reach the point where your screen goes dark and you see the cursor, type the first letter of the username for your computer, then hit Enter, then type your password, then hit Enter.
4. After a moment, you should see the spinning beach ball
5. Your screen should then move on to something along the lines of "Completing OSX Installation" (I can't remember the exact wording). Let it finish. After that it should go to your normal desktop and the issue should be fixed. (If your screen goes pitch black during this process, hit the space bar. I thought it wasn't working, but the screen was just sleeping).

TS1367 Hallo,I have an IMAC 21.5. which does not start.When i press the power button i hear only beep with an interval of 4-5 seconds.Some times when i take off the RAMS and put them again then get a white screen and shows that i have to insert a bootable

Hallo ,I have an IMAC 21.5. which does not start.When i press the power button i hear only beep with an interval of 4-5 seconds.Some times when i take off the RAMS and put them again then get a white screen and shows that i have to insert a bootable device.Then i bought OSX mountainlion on line and wrote it on a DVD and tried with a USB key board to start the DVD.But does not work.Please help me to get this imac work.
Thankyou in advance for your help.
Terrence

Hey terremo,
Thanks for the question. From the information you provided, it sounds like the iMac is successfully turning on, however video is not displayed. These symptoms can usually be isolated further by the troubleshooting steps in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Thanks,
Matt M.

Was just opening page on Chrome when computer went to white screen and became unresponsive. Did this several weeks ago too. Disk tools find no issues.

While trying to open a link on FB, my computer went to a white screen and become unresponsive. I had to do a hard close. It did reboot and the Disk Aid finds no problems when I ran Verify Disc. This happened 2 weeks ago as well and I had to do a Safe mode reboot. Things seem a little slow when I use internet-Google Chrome (updated). I have a MacBook Pro with OS X 10.9.4 I'm not sure what else needs to be done? I'm not supertech savvy.

Hello! Since you don't have the startup disk your best shot is using fsck. Tom
when you re-start, hold down the apple key AND the "S" key You'll start up into a command line interface.. it'll look strange but just hang in there. When it's done booting up, you should see something that looks like this: localhost:/ root# at this point, type in 'fsck -f" please note the space before the dash, and of course, ignore the quote marks, then hit return You computer will no go thru some low level checks on your HD. Most likely you'll get a list of a few files that have problems and this procedure will fix them. This should take about 2 or 3 mins, so don't be in a rush. When the line says "VOLUME WAS MODIFIED", this means that changes were made. At this point you should be back at the same localhost:/ root# prompt. run fsck -f again. Wait for it to finish. if you continue to get the "Volume was modified" message, continue to run fsck -f until you'll get a prompt that says The Volume(your HD) appears to be ok, again with the localhost:/ root# prompt. AT this point, type reboot, hit enter and your computer will start up normally. This is not difficult, but you may want to give it a shot when your feel you have a few moments where you can attempt something new and not stress too much.

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

My macbook pro won't start up. I get the white screen and the grey apple icon   the spinning wheel......and it doesn't change !

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 and virtical blue lines

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