Yosemite upgrade from Mavericks left me with a white screen.

i dont think the install completed And now my computer won't start up. It shows the apple icon and a progress bar and then just does nothing. I've turned it off and on a few time with the same result.
Any ideas?

Try resetting the SMC. If that does not work, restore OS X from the recovery disk.
Barry

Similar Messages

Yosemite Upgrade from Maverick Fails

Recently attempted to upgrade my MacBook Pro 17" w/Retina from OS X Mavericks to OS X Yosemite. All components downloaded successfully and MacBook Pro was then restarted.
Upon power up, I'm presented with the grey Apple screen, and then immediately I see tiny Linux script fill the upper-left portion of the screen. The screen clears too quickly for me to read the text, and it takes me to the "Your computer failed to start properly, please press a button or wait a few seconds for your computer to restart" screen. Restart, or even powering down and restarting does not resolve this issue.
Rebooted into Recovery mode (Power button, then hold CMD-R until Apple appears), and launched the Repair utility. I verified permissions, and noted several problems. I repaired permissions. I then ran Verify Disk, and it found several errors and corruption. I ran Repair Disk, which repaired and verified the repairs were successful.
Restarted my machine...same gray screen and error loop as before.
I again booted into Recovery mode and selected "Reinstall OS X". This loaded a clean copy of OS X Mavericks.
Macbook Pro now starts as before the upgrade.
Opened App Store and download OS X Yosemite again.
OS X Yosemite downloaded, and installer launched.
Installer runs (very quickly now), and system is restarted.
SAME PROBLEM.
Back to Recovery Mode
Restored to OS X Mavericks.
Any ideas?

marinko70 wrote:
imac late 2013 with SSD.
the upgrade path from mavericks to yosemiti works, but it permanently screws up users and permissions - so any app with a database or files you can't use. complete and utter waste of time.
poorly packaged upgrade that it changes your user name for reasons only known to apple - it is free after all!!
It sounds like something was not quite right with your Mavericks system before you tried to upgrade. I have a spare HD that I use as a guinea pig for new OS versions. This drive had Mavericks on it and a few apps (Little Snitch, Firefox, Pages, Pixelmator, CCC, Super Duper, Disk Warrior, etc.). Last night I installed Yosemite without any issues. No problems with permissions, and it certainly didn't arbitrarily change my user name. I was pleasantly surprised at how painless the process was. Internet settings worked fine, associated updates worked as expected, mouse settings were retained, etc.
However, there is no way that I can stomach using the wretched mess that is iTunes 12, except perhaps for syncing an iOS 8 device at some point in the future. What's been done with iTunes will keep me using Snow Leopard or Mountain Lion and iTunes 10.7 to manage my music collection.

Yosemite has left me with a white screen. 2011 model

I haven't managed to get passed a white screen since installation. Is there a fix for this? I'm worried. Running on imac Intel 2011 model

hi,
i had the same Problem minutes ago. I solved it by klicking the middle of the screen where usually the login picture appears. I then typed in my password and pressed enter. Maybe it was just the "klicking around in the Middle of the screen", wich helped. Anyway, it worked! and im now able to finish my installation.
hope that helped,
MIchael

Since upgrading from Mavericks to Yosemite Mail, Spotlight,Mission Control and App-Store don´t work correctly. Is it possible to return to Mavericks?

Since upgrading from Mavericks to Yosemite Mail, Spotlight, Mission Control and App-Store don´t work correctly. Is it possible to return to Mavericks?

If you have an external drive with an OS X Time Machine backup, then do restore of your last backup. If you have an external drive with a bootable clone of your previous system, you can boot to that clone and re-clone the OS X on your external drive back to your Mac's internal drive.
If you do not have either of these available, then the reverting/restoring process becomes much more complicated and involves purchasing an external drive and backing up your current system to that drive, then erasing, reformatting your hard drive and now your only options to installng an OS X version is doing a clean install of OS X 10.6 Snow Leopard, then upgrading, again, to either OS X 10.7 Lion or 10.8 Mountain Lion. OS X 10.9 Mavericks is no longer available for download and Apple has not made OS X 10.9 Mavericks available in any other form to be able to redownload and install.
Maybe it would be better to explain in detail your issues with Yosemite to see if any of us here can help you with your difficulties.
I am not running or using Yosemite, so I cannot help you with your Yosemite issues,
There are others here who can help you with Yosemite.
Good Luck.

After upgrading from Mavericks to Yosemite I can no longer find in Mail the icon (looks like the Add To Contacts icon without the mark) I used to press in order to obtain an e-mail address from my contact list. What procedure should I use now in or

After yesterday upgrading from Mavericks to Yosemite I can no longer find in Mail the icon (looks like the Add To Contacts icon without the + mark) I used to press in order to obtain an e-mail address from my contact list. What procedure should I use now in order to quickly add an address to an e-mail that I wish to send?
Bob

On the right of the To: field you will see a circled plus sign:
Click it.

I have just upgraded from MAVERICKS to YOSEMITE. My ageing EPSON CX3600 will no longer work. APPLE support gave me advice which did not work. How do I progress short of buying a new printer?

I have just upgraded from MAVERICKS to YOSEMITE OS 10.10. I have 4GB of memory.
Since upgrading my ageing EPSON CX3600 will no longer print. I get the error message ;COMMUNICATION ERROR.
Apple support gave me advice which hasn't worked including deleting the printer via system preferences and rhen restoring it after rebooting the system
Any ideas please.

Epson Stylus CX3600
Epson Stylus CX3600 : Drivers & Software
There is also a driver for it at
Gutenprint for Mac OS X

Mite, I addI just upgrade from Mavericks to Yoseed a new user to my computer , however it doesn't show up at startup. What's going on?

I just upgraded from Mavericks to Yosemite, I added a new user to my computer however it does not show up on start up. What can I do to change this?

If you are in System Preferences > Users & Groups, click Login Items at the bottom of the list of users in the left side bar, and do you have the box checked to show the users?

All Safari Logins and Passwords LOST upgrading from Mavericks

All my Safari Logins and Passwords were LOST upgrading from Mavericks.
There were HUNDREDS of them.
HOW DO I GET THEM BACK????
I did a Time Machine Backup.
Is there a way to get the file with al those?

http://www.roboform.com/support/news
Version 7.3.2
* Firefox 5: add support for Firefox 5.

My imac starts with a white screen, then goes black and a small white line just blinks in the top left corner of the screen?

My imac starts with a white screen, then goes to black with a small white line blinking in the top left corner of the screen. Any ideas? Thanks.

Try starting your iMac with the original DVD that came with the machine then launch disk utility to repair your hard drive.

I am upgrading to 10.8.3 snow leopard and it has been 3 hours with a white screen - is it supposed to take this long?

I am upgrading to 10.8.3 snow leopard and it has been 3 hours with a white screen - is it supposed to take this long?

Welcome to the Apple Support Communities
It looks like your MacBook Pro is restarting. Just hold the Power button until your computer turns off, and then turn it on again, so OS X should start properly

Every time I started my Imac, loks like If It is the sistem downloading again, with yhe white screen, the apple and the filling up bar. Its that normal???

Every time I started my Imac, loks like If It is the sistem downloading again, with yhe white screen, the apple and the filling up bar. Its that normal???

It is for Yosemite. Not for Mavericks or earlier.
OS X Mavericks- If your computer stops or delays while starting up with progress bar

My ipod touch has frozen with a white screen. None of the buttons will work to turn it off or take any action. Holding down buttons for 10 seconds plus does not work.Help

My ipod touch has frozen with a white screen. The on/ff and sleep buttons will not work whether pressed for a moment or held for more than 10 seconds as per help pages. When connected to computer it is not recognised and no indication in "devices".It has been working perfectly from Christmas until now. Was watching a TV prog via BBC iplayer when the image and sound froze for about 5 seconds then just white screen. Help

First, try a system reset. It cures many ills and it's quick, easy and harmless...
Hold down the on/off switch and the Home button simultaneously until the screen blacks out or you see the Apple logo. Ignore the "Slide to power off" text if it appears. You will not lose any apps, data, music, movies, settings, etc.
If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. Connect via cable to the computer that you use for sync. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."

Can anyone help me with a white screen on boot, chime and unresponsive keyboard

As stated in the title it boots up with a white screen and it chimes but i cant use any of the commands to get into the recovery or even boot from a cd or usb drive. I've taken out the hdd and put it back it and it doesnt seem to be the problem. Is there anyone who can tell me exactly whats wrong with it?

sqredreaper wrote:
model number a1286 im not exactly sure of the os seeing as i just received it yesterday,
A1286 isn't specific enough, I need more information for a exact model match.
http://everymac.com/ultimate-mac-lookup/?search_keywords=A1286
If I know the exact model, then I can tell if that came originally with Snow Leopard, we can install Linux.
Would it be possible for me to format the mac hdd from my pc?
Not with Windows, Linux might, but it would be a difficult.
Mac's as you know have EFI, which is loaded from a hidden partition on the boot drive.
Only OS X, their install disks (and 10.7+ Recovery HD parititon) can format the drive properly for a Mac to use, as they install EFI which the hardware requires for the at boot keys to be able to select Linux and install rEFIt in EFI firmware.
If your Mac meets 10.6 qualifications, then the 10.6 install disk can be ordered, the instruction for creating a dual boot system with Linux Mint.
Of course there is a problem, if the machine is too new, then hardware drivers to work with Linux might not have been circulating to use.
Apple doesn't supply the hardware drivers for Linux or anyone, so it takes hackers to get them and they have to have Mac's. (they rather use generic PC's)
Older Mac's pre-2011 I know where the drivers are at, on Ubuntu's site (Linux Mint is based on Ubuntu) however I don't know if latest versions of Ubuntu/Mint work with those drivers, I'll asume they do.
Hardware drivers are important because the machine won't work well without them, like no Wifi, video screen options etc. one just gets the bare minimal use.
Interest in running Linux on Mac's died when Apple released OS X 10.7, as the Recovery HD partition created a obstacle and Apple seems to be heading towards a closed system like on iPads and iPhones.
Linux needs open hardware like generic PC's, and the trend from Microsoft is like Apple, closing up hardware from anything but Windows running.
If you haven't installed Linux on a generic PC, I suggest you try that first as on Mac's it's the most difficult.

My iphone 4 is flickering extreamly bad. I just purchased it in july. Whats causing it to do this? It frooze up earlier with a white screen. Battery died and i charged it up it came on to flickering? Help please

My iphone 4 is flickering extreamly bad. I just purchased it in july. Whats causing it to do this? It frooze up earlier with a white screen. Battery died and i charged it up it came on to flickering? Help please

Hello Edward
Follow the prompts on your iPhone and you will get either at your home screen like normal or get to a point of restoring from back up. The article below will give step by step for restoring from back up.
iOS: How to back up and restore your content
http://support.apple.com/kb/HT1766
Thanks for using Apple Support Communities.
Regards,
-Norm G.

My Macbook Pro is frozen on the login page with a white screen and only my login picture. How do I fix this? I can't turn it off and I closed it and let it charge but it's still not working.

My Macbook Pro is frozen on the login page with a white screen and only my login picture. How do I fix this? I can't turn it off and I closed it and let it charge but it's still not working. It's only 3 months old and was working perfectly fine 30min before this happened.

Hello Kierasully,
I would start your troubleshooting with the article below for issues of not being able to log in to your Mac. Start with booting up in to Safe Boot as well as resetting PRAM on your Mac. If that does not work, then verify the hard drive with booting to the Recover HD and go to Disk Utility to verify it.
Mac OS X: Gray screen appears during startup
http://support.apple.com/en-us/ts2570
Regards,
-Norm G.

Yosemite upgrade from Mavericks left me with a white screen.

Similar Messages

Maybe you are looking for