I have installed yosemitie but now all i can see is a white screen?
i have installed on an apple mac 21 inch.
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.
Similar Messages
-
i've tried to set up a new user on a mac book pro and i restarted it to create the new account but now all i can get is a white screen with the apple logo and the loading symbol what can i do ?
Look at this support article:
http://support.apple.com/kb/ts2570
Ciao. -
I am having problems connecting to home wifi. It was working, but now all I get is a blank white screen. I re-booted with no success.
Hi, blank white screen where exactly?
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.5, 10.6, 10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x/10.8.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
If using Wifi/Airport...
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6/10.7/10.8, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
(There may be better or faster DNS numbers in your area, but these should be a good test).
Click OK. -
Hi guys i have an macbook 13 late 2007 and does not work when i start it up all u can see is blank white screen and after that its keep bepping high peech tone 3 times i was thinking the hard drive but im not too sure please guys help.
Try to reset the PRAM first then go from there.
http://support.apple.com/kb/HT1379 -
Upgrading to yosemite the computer 27 iMac froze and now all I can get is a white screen
Upgrading to yosemite the computer, 27 iMac froze and now all I can get is a white screen
How can I move forward or revert back to mavericks?Look at this support article:
http://support.apple.com/kb/ts2570
Ciao. -
Please help me
Try double clicking the home button and then scrolling the dock to find you tube. Press-hold the app button until it wiggles and hten press the red 'no entry' sign. Press home button again and then try relaunching youtube and see if it works now?
-
i have pressed start to install updates, but now my iphone 4 will not stay on, screen showing picture of cable & itunes sign when i attach to computer it only ask me to restore to factory setting and i dont want to lose my photos ect,
Thanks AngelaYour phone is in recovery mode. All your data are already gone.
-
My video app that is preloaded on the IPAD will not open. all I can see is a blank screen. Does anyone have any suggestions on how I can fix it?
The "The connection was reset" error message can be caused by a bug fix for the BEAST (Browser Exploit Against SSL/TLS) attack that the server doesn't handle.
*[[/questions/918127]]
*[[/questions/918028]] -
I have installed Yosemite and now I cannot open Pages
I have installed Yosemite and much to my dismay I cannot open Pages
You need to update Pages v5.2.2 to v5.5 via the OS X App Store. Yosemite requires Pages v5.5(.1).
-
I have my ipod nano 5th generation and when i plugged to my computer it is recognized but i cant do anything. On the ipod all i can see is a blackscreen with the apple sign! How can i fix this?
Howdy Lumagofe,
I was thinking that you may need to reset the iPod Nano, outlined here How to reset iPod http://support.apple.com/kb/ht1320.
Press and hold the Sleep/Wake button and Volume Down button simultaneously for at least eight seconds or until the Apple logo appears. You may need to repeat this step.
If the above step did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn't set to go to sleep. Try resetting the iPod while it is connected to power.
If that doesn't quite get the iPod going again, then it will need to be restored. Use this article to help with that Restoring iPod to factory settings http://support.apple.com/kb/ht1339.
All the very best,
Sterling -
I have been too enthusiastic installing Yosemite. My Photoshop 5 doesn't start up anymore because 'of a fatal problem'. What to do. Please help me out
Two points: Java or not, Mac should (and did for me) make(s) it easy to download the Java. After the above message appeared to me, I discovered that Mac, Adobe or someone made it easy for me to do so, and I did. If you don't get guided to the download, Google or Java will enable you to find it. Whatever happens, try doing what I did, which solved the problem for me as mentioned above: find the original DVD for Photoshop (or the Suite) and, without canceling the already-installed version, re-install. I have the whole CS 5.5 Suite, but the installation disk enabled me to "install" just the Photoshop portion and confirmed the serial number. The re-installation is actually, in this situation, just a repair. There is a workaround if you don't have the original disk (a workaround which you would have to pursue on the Adobe site) and, if you registered the program with Adobe, you will be able to find your serial number online if necessary.
The riddle remains as to why Java supposedly has nothing to do with Photoshop, as you were told, whereas the message to download SE 6 that you reproduce in your query does appear (as it did for me).
"Le vie del Signore sono misteriose". -
So can I know when can I reinstall the game ?
Hi guppyfish,
Welcome to Apple Support Communities!
The content on the iTunes Store and app store varies from country to country, so you may be attempting to find apps that aren't available in your region. The article below provides more details about content availability.
iTunes Store: Which types of items can I buy in my country?
http://support.apple.com/kb/ts3599
Symptoms
Each type of content on the iTunes Store has different availability based on the country in which you reside.
-Jason -
Title says it all.
Hi Cornelius6505,
Thanks for the question. If I understand correctly, the iPhone does not start up past the Apple logo. I would recommend that you read this article, it may be able to help you resolve or isolate the issue.
iOS: Not responding or does not turn on
Thanks for using Apple Support Communities.
Have a great day,
Mario -
I've updated my FB app and now all I can see is one friend! Can anyone help please?
Please help!!??
I can't see any posts from my FB friends. I've not changed any settings at all. Just updated app and the hit the problem. have deleted and reinstalled several times but nothing. searching online cant believe this hasnt happened to others??
-
All I can see is a blank screen and random black boxes - help!
Think it has updated recently but not 100% sure...
Every time I try to open firefox I get a blank screen! If I click on the screen I get random black boxes but I can't even see the toolbars! (Just the close, mini and maximise at the top rhs).
Actually re downloaded and installed but it is the same ....
Ran malwarebytes and it found some spyware which I have removed...
Running Avast antivirus on Windows 7 Home...
Can't think of what else but HELP ...having to use IE to post this and hating every second...
See someone else had the same problem but solved it themselves...but someone else did too
Sorry if this is a duplicate question - finding it hard to search etc in IEI've done that and it worked - thanks!
(Bit worried about the security warnings about using older versions though but at least now I can try and find a better solution!)
Maybe you are looking for
-
Resyncing my phone did not fix the problem. I also tried going into my store settings, on my phone, and logging out of my ID, and logging back in. It still shows her ID, but only when I am trying to update the apps that are already on my phone. I
-
Have 2 ipads setup the same but 1 no longer connects to the network. Have reset network settings and tried to reconnect but no luck. Any advice?
-
Little question about a Claws-Mail tray icon theme, and how to use it.
There is a Claws Mail tray icon theme available on gnome-look.org: http://gnome-look.org/content/show.php/ - tent=71540 These are the instructions the author gives to install the theme: Claws Mail Tango trayicon theme Claws-Mail version = 3.3.0 copy
-
PLEASE Help ASAP - deadline looming
Hi - I appreciate any specific help on this problem. I've developed a Flash Drag & Drop game for kids to dress a character properly for winter snow sports (skiing, snowboarding, xc & snowshoe) -- I've got everything working beautifully except for the
-
The enhancement specification of structure type ekko is not consistent
Hi all, While making a program that displays status of gr /ir, excise availing and miro I got an error as "The enhancement specification of structure type ekko is not consistent".So what does it mean and how to remove it. Thanks Regards Navratan