After boot back from windows to OS X it stuck at grey screen

After using windows 7 and use bootcamp to get back to OS X
it stuck at grey screen with apple logo and the circle
i'm be able to boot using option for choosing windows anytime now,
but i can't use OS X and everytime booting back to OS X it stuck at greyscreen
can anybody help me with that
i'm using windows7 on mac OS X v10.7.5 lion to type this
i have tried repair the disk using disk utilities from recoveryHD but it didn't work at all
so if anybody knows how to solve pls tell me
i did't backup anything on OS X and i feel sorry for that now
The HDD work find though i can still get files from OS X partition.
so if i have to backup i think i should be able to backup through windows 7
PLS HELP!!!!!!!

Reinstalling Lion/Mountain Lion Without Erasing the 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.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

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How to Recover HD Data From PowerBook G4 If It Is Stuck On Grey Screen ?

Hey ,
I have a PowerBook G4 and after a force reset it wont go past the grey screen with apple logo on it.
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http://support.apple.com/kb/HT1661
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Hi all,
I've searched Google and this message board for this issue, but haven't found any mention of it.
Here's the problem:
I have Windows 7 installed on a boot camp partition. Any time I switch into Windows 7 and then back to Mac OS X (latest version of Snow Leopard) iTunes (both 9 and 10) refuses to recognise my iPhone, meaning I can't sync or transfer any files to my iPhone 4.
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Has anyone else come across this issue and/or found a fix for it?
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Hello again, GiannisFromAthens.
At this point, considering that the primary issue is with getting the Windows update resolved, we need to get that taken care of first. To do so you may need to consult Microsoft, or whoever supports the installation of Windows on your computer, for more troubleshooting to resolve it.
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Macbook pro model A1278 wont boot osx stuck at grey screen

I have had my mbp for about 3 years now and has worked great. Just today i got home from work and when i opened the macbook which was already running I was in OSX but it was frozen with colored wheel spinning. I had never experiened this before but I didnt think too much of it and held down the power button to reset it. Now i am stuck at the grey screen with the Apple Logo and spinning wheel and cant get back into OSX at all. So i started googling (on another computer obviously) and tried:
1. boot in safe mode. Didnt work, still stuck at grey screen
2. boot in safe mode with "commd-shift-v" to see info. stuck in "dos" looking screen. see pic at bottom.
3. tried resetting VRAM w/ "commd-opt-p-r". did not work, still stuck at grey screen.
4. got original OSX install DVD. Was able to boot to disc and make it to disk utilities. went to repair and got error "unable to unmount disk"
5. ran "repair permissions" and completed that. ran "verify disk" and got green "disk ok" message. then re-ran repair and got same "unable to unmount disk"
so know i am worried. my main concern is the 80 GB of music I have on this computer (and dont currently have backed-up {que back-up lectures}) and my pictures. Does it sound possible to recover music and pics based on this little bit of info? Im willing to take it to the Apple store and pay the price if it sounds like I can recover it. I am pretty computer savy but am reluctanct to just start trying anything that could lose my music/pics. I cant try just deleteing and restoring OSX to factory settings and losing all that music/pics.
so...what is best approach to access and back up these files myself? I do have another macbook with a firewire connection but am not familiar with that process. I will get a external HD immediatly (now ofcourse)...can I backup my files from disc utility?
Thanks for any help.

Sorry about specs...i entered in drop box menu but realize doesnt show on thread:
MacBook Pro "Core 2 Duo" 2.53 13" (SD/FW)
2.53 GHz Core 2 Duo (P8700)
Intro Date:
June 8, 2009
Disc Date:
April 13, 2010
Order No:
MB991LL/A
Model No:
A1278 (EMC 2326*)
Subfamily:
Mid-2009 13"
Model ID:
MacBookPro5,5
Std RAM:
4 GB
Std VRAM:
256 MB
Std Storage:
250 GB (5400 RPM)
Std Optical:
8X DL "SuperDrive"
I was running the last vesion of snow leopard (10.6.8 i think).
I picked up a firewire today and am going to attempt to make "broken" macbook target and pull files onto other macbook. Will give an update tomorrow after attempt. Thank you for fast response.

Switch back from windows 7 to ios

switch back from windows 7 to ios

Presumably you mean back to OSX.
You can either locate the Bootcamp utility in the system tray and click it and choose reboot to OSX or you can reboot and hold the Alt key after the chime and select Macintosh HD.

Satellite P850-30W - Fan does not run after coming back from sleep mode

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This has happened twice (maybe more times without me knowing), and Ive had the computers for a month.
Normally the fan starts running when the CPU gets over 50 celsius, and stops under 50 celisus...
I tried running Prime95 when this fan-issue occured and the computer temps got dangerously high (close to 100 degree)! the fan did not start at all
...this error could potentinally damage the laptop...
to get the fan running again I have to restart windows
anyone else experienced this?
I guess the fix would be to never use sleep-mode...or toshiba needs to fix it with a bios update.

What kind of answer do you expect here in user community?
Exact info about the fault? I dont think that somebody would be able to provide exact answer but just speculations
In other Forum you can read about Satellite notebook; but is it exacts the same model?
No, it seems to be an L650 series. Its completely different series .
From my opinion its not software related problem.
BIOS issue?
Well, in case it would be a BIOS issue, the problem would appear always and not sometimes after being shut down 200 times.
It could be a hardware related issue. Memory? Maybe
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Folks,
Hello. I have just installed Oracle Linux 5 as Guest OS on the top of VMPlayer. Host OS is Windows 7.
I downloaded Oracle E-Business Suite R12 from edelivery into Windows 7 in a folder(EBS_R12) on my LapTop screen.
In order to install EBS R12 into Oracle Linux 5, I copy/paste the folder EBS_R12 into Oracle Linux 5 screen. The file size is about 50GB. After coply/paste is completed successfully, I cannot find where is the folder (EBS_R12) in the Guest OS Oracle Linux 5.
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Hi,
After coply/paste is completed successfully, I cannot find where is the folder (EBS_R12) in the Guest OS Oracle Linux 5.Was the copy/paste successful.
If yes then you can do the following
#find / -name EBS_R12 -type d -print
(Assuming you copied the folder "EBS_R12" , But not its contents).
Thanks

My mac hung up while installing an update. It took hours and still did not complete the update. I restarted my mac. Upon turning it back on, a wheel has been spinning on a grey screen. I tried to reinstall OS X from utilities, but encounter an error. Why?

My mac hung up while installing an update. It took hours and still did not complete the update. I restarted my mac. Upon turning it back on, a wheel has been spinning on a grey screen. I tried to reinstall OS X from utilities, but encounter an error. What do I do?

Hey Manaskala,
First point of call on all grey screen issues is the following:
http://support.apple.com/kb/TS2570
Given this issue has appeared after a software update, I'd advise you do the following instead though:
1. Get an external hard drive, with enough space to put the entire hard drive of your Mac onto. Make sure you've safely copied any data you have off of it, as the next step will erase it.
2. In the recovery HD of your machine, use Disk Utility to format you EXTERNAL hard drive with the partition table as GUID, and the format as Mac OS Extended (Journaled).
3. Get out of Disk Utility, and click Reinstall Mac OS X.
4. When asked where, choose to install onto your external hard drive.
5. When the download and installation is complete, your Mac will reboot into a clean fresh setup screen. Make your user account an administrator, and make up a name and password; I use 'Test' and 'test'.
6. Your machine is now running from the external hard drive, not the internal hard drive, so don't be alarmed when you don't see your files.
7. Open the finder, you should see 'Macintosh HD' in the sidebar. This is the internal hard drive of your computer.
8. Open Macintosh HD, and copy out the following folders into a new folder on your desktop:
-Users.
-Applications.
-Library. (This only needs to be done if you use 3rd party software that saves things in the /Library, do a quick google and see if it does e.g. Photoshop, Protools).
9. When these have copied (it'll take quiet a while), you can now use Disk Utility to erase your hard drive. Don't erase Macintosh HD but the ENTIRE hard drive on the inside of your Mac, and as Thomas A Reed mentioned, there was likely an existing issue on your HDD so please go to Security Options and choose 'Zero Out' before clicking erase. This will rebuild the partition table which was a possible cause of the failed update.
10. Reboot the machine holding 'Option', go to recovery HD.
11. Choose 'Reinstall Mac OS X', this time onto your INTERNAL hard drive.
12. When this is complete, make another admin user called test and password test, like you did last time.
13. Run Software Update from the  menu of your Mac.
14. In the Finder, you should see your external Hard Drive. open it up, inside that you should see your desktop etc, and on the desktop will be your folder containing Library, Applications and Users.
15. Go to Finder up next to the  and choose File -> New Finder Window.
16. In your second finder window, open up Macintosh HD (through the Go -> Computer menu), and go to your Users folder.
17. Open the Users folder in your first finder window, and copy your user folder (has your name on it) into the second user folder (the one inside Macintosh HD).
18. This might take a while.
19. When complete, go to System Preferences -> Users and Groups and unlock the padlock.
20. Click the '+' sign, and make a new administrator user.
21. Now, the fun bit. Note the name of your user folder you copied, e.g. 'Nathan', containing all of your stuff. Note the difference between your user folder (has your name on it) and the Users folder (contains YOUR user folder, guest folder and shared folder).
22. Make the ACCOUNT NAME of your new adminstrator user the EXACT name of your user folder (normally lower case and without spaces), this is case sensitive folks. Your full name can be whatever you want, usually your full name.
23. Then click create. You should be informed that a home folder with that name in it already exists in the Users folder, would you like to make your new account from that folder? say YES!
24. When this is complete, log out of the Test user, log into your new account we've just made, all your stuff should be there.
25. ???????
26. Profit.
There's a few little bits that may need to be cleaned up afterwards, applications folder from your external hard drive should replace the applications folder on your internal hard drive, if the previously mentioned /Library folder contained important goodies then that should replace the /Library folder on your new Mac.
Hopefully that will help you out, straight after that is done make sure your stuff is there, erase your external hard drive and turn on time machine!

My macbook pro is stuck on grey screen with apple symbol in center with the progress circle under it continusly spinning. After I had turned it on. Prior to turning it on I had to force close and shut down a few hours prior. Please Help?

My macbook pro is stuck on grey screen with apple symbol in center with the progress circle under it continusly spinning. After I had turned it on. Prior to turning it on I had to force close and shut down a few hours prior. Please Help I have tried everything I know to do

Unfortunately this means that there is a problem in the boot sector of your hard drive. It might be indicative of a fundamental corruption in the coding that allows your computer to boot your operating system from your hard drive. I had this problem twice and it resulted in me having to get a new hard drive and restore my data.
In other words, your computer can't talk to your operating system so you can't access your data.
Here is my advice: DON'T CALL APPLE TECH SUPPORT though they are kind and usually helpful it will take you an hour just to explain the situation and they will only tell you to do what I'm gonna say here.
First: Shut down your computer completely
Two: boot up while holding down the following keys: command, option, p, and r. The computer will reboot 3 times. This solution will likely fail so if you're frustrated skip to the next step.
Three: Boot up while holding down the option key. Select recovery drive. Select your default language. Select disk utility, click on Macintosh HD, and select "verify and repair volume." Likely the verification will produce some line like "unused node not erased." Or something like that. If anything using the words "node structure" comes up, you need a new hard drive.
If after verification and repairs you still can't boot I sincerely hope you have apple care because you will need a new hard drive. Set up an appointment to come in to the apple store, they will tell you to go and get data recovery, just ask them to give you the old hard drive. Unless you have an up to date backup in which case you can just restore from that. If you're lucky the only issue is with the boot sector which means that if you ask them to give you the old hard drive, you can buy an enclosure and you have effectively been given a free external hard drive. It still works to store data just not to load an operating system.
If you have a back up drive bring it to the apple store and they'll do the whole thing right there, it should take around an hour and a half but may take longer.
Hope this helps, it's annoying but it's your safest bet.
All the best.

Mac Pro Stuck at Grey Screen, then will only boot into OS X Utilities.

My Mac Pro is stuck at Gray Screen. When I reset PRAM, it loads the OSX Utilities screen, prompting me Restore from Time Machine, Reinstall OS X, Get Help, or Disk Utility. I ran Disk Repair and Repair Premissions, same thing.... stuck at grey screen.
What will happen to the data on my HD if I choose to Reinstall the OS X? IS that the best choice? Thanks.

Off hand I think your drive may be bad. But to find out you need to erase the drive, so you will need to have a recent, bootable backup.
Install or Reinstall Lion/Mountain Lion 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 Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion 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.
If this does not work, then you need to replace your hard drive.

MacBook Pro stuck at grey screen after Yosemite upgrade

upgraded to yosemite yesterday. Reboot and stuck at grey screen(login in page) when i log in there is some codes thing at the left top corner of the screen. and then it reboots again. Which means I can never log onto the computer. what should I do

If you can't start up and log in in the usual way, try in safe mode.
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally 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.
Log in as an administrator to carry out these instructions. If you have only one account, you are the administrator.
☞ If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
Safe mode is slower than normal, and some things won’t work at all.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t start in safe mode.
If you're able to log in, launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
Please don’t post other kinds of diagnostic report.

Mac won't boot, stuck on grey screen if the external hdd plugged in

as the title.
if i plug my external drive, via usb port, the mac won't boot and stuck at grey screen.
unplugging it, the boot process will continue.
the hdd is a LaCie mobile hdd
any help?

Hello jason(?)
It's a LaCie external mobiel hdd, formatted as exFAT. without adapter. take power directly from usb port.
i tested it on my iMac and it works fine. boot up as normal. the only difference is my iMac is on 10.6.8 and my Air is on 10.7.2
I tested on both USB port on my Air and the problem still persist.
the read/write speed is normal (bought it like a day ago).
another thing is I don't have this problem with my external WD drive.
One thing to notice is that, I accidentally left like for like 2-3 mins and it boots. So why the question now is why it's taking so long to boot? normally it just takes <20 seconds. Seems like it tried to boot from the external hdd, doesn't it?

10.6 won't boot; stuck on grey screen

I know this is covered here to some degree, at least, but I haven't been able to find a complete solution/answer, so here goes:
(Please, redirect me to the right source of information, if you know where to look, but not before reading through my post. Thanks! Oh, and I'm no computer expert, so, please, bear with me.)
First of all, my equipment: 17" iMac (serial #: w86262cru2n, emc #: 2104), running (ran?) 10.6 (w/updates)
So, as my title says, my iMac won't boot up and gets stuck on the grey startup screen with the  and the spinning wheel. I can wait and wait, but it never gets past this point.
Here are some things I've tried (nothing has worked so far; "no success" = stuck on grey screen). These steps are also laid out here.
- Tried normal startup (no success)
- Tried Safe Boot (no success)
- Tried booting without connected peripherals (no success)
- Tried alternate outlet (power source) (no success)
- Tried resetting PRAM & NVRAM (no success)
- Tried boot from 10.6 Install Disk (no success)
- Tried replacing original RAM (no success)
- Tried mounting internal drive as Target Disk on my 10.5 MacBook (mounts fine; used 10.6 install disk to verify, says disk is "ok")
- Tried booting to MacBook via Target Disk (i.e. iMac is external drive connected by FireWire) (no success)
- Tried booting from cloned copy of 10.6 disk on an external USB drive (yes, this can be done; I've done it before). This drive was verified "ok" in the same way the internal disk was (see above). (no success)
My next step appears to be to erase the original internal HD and reinstall 10.6. This is where my my ignorance begins to rear it's head. Since I can seem to boot from the iMac, can I do this through my MacBook, viz. mount the original, internal, 10.6 disk on my MacBook and erase it and install 10.6 from there (e.g. through Disk Utility on the 10.5 MacBook)?
Assuming this is possible, can someone step me through the process?
Assuming this last step isn't possible, does this all point to a faulty logic board (sounds like a 'worst case' to me)?
Any ideas? Suggestions?
Many, many thanks, BTW, to all who have posted here and whose help I've availed myself of anonymously many times. And thanks in advance to anyone with helpful ideas.

Try a SMC reset and follow the steps again in the support doc for grey screen
https://support.apple.com/kb/ht3964
https://support.apple.com/kb/TS2570
Your 10.6 install disk seems unreadable if it won't "hold c or option" boot.
Clean the bottom with a alcohol and a very soft cloth and lightly polish until there is no streaks.
Don't touch the bottom or place the disk onto something that will mar the bottom.
If the disk still fails to work, get a replacement, as your going to need it. Get a jeweled plastic case for it.
To make copies of your Snow Leopard install disk, follow these directions.
http://www.walterjessen.com/make-a-bootable-backup-snow-leopard-install-disc/
Once you can hold c and boot off a working 10.6 install disk, simply reinstall OS X without using Disk Utility to Erase and Format the drive, this will replace the OS X installed (and bundled programs) with the disk versions, then reboot and immediately use Software Update to get current.
Your user files, third party programs will remain untouched, except for ones installed in OS X/root system files, those will have to be reinstalled with updated copies.
All else fails:
Grab a copy of your recent user file folders via FireWire target disk mode first or from a hold option bootable clone on a external drive
If you have to completely erase and reformat the drive, reinstall 10.6, there are some things you need to know.
1: The free iLife that came with your 10.5 install disks are not on the 10.6 retail disks
So to get that you need to select the drive makers name in Disk Utility, erase and install with the 10.5 disks first (warning, wipe entire drive)
2: Name the boot drive the same name as before in Disk Utility when formatting.
3: When you go through inital "Welcome to Mac" setup, use the same username as before, (different password)
4: Once in OS X 10.5 stick a working 10.6 installer disk in and upgrade. Once rebooted, immediately Software Update to current version.
5: Install programs from fresh sources next and update.
6: Finally, return the backup copies of your user file folders (Music, Documents, Pictures, etc., not Library) to their respective folders on the new configuration. Because you used the same hard drive and user name as before you should have little complications with things like iTunes song locations/playlists and other hard references to files on your drive.
By installing the OS first, then upgrading, then programs, then finally user files last, keeps the drive optimized as the drive is faster on the data installed first than data installed later. Since users files change size often, having them towards the end where they can grow or shrink keeps the performance of the computer up as much as possible for the OS and applicaitons. Eventually though with OS X updates it can get a bit more defragmented, but not much.

Macbook does not boot. stuck at grey screen. have tried single user mode, but text stops at AppleIntelCPUPPowerManagement: initialization complete, without anymore prompts. no

macbook does not boot. stuck at grey screen. have tried single user mode, but text stops at AppleIntelCPUPPowerManagement: initialization complete, without anymore prompts. no hash key appears that will allow me to type in: fsck -fy
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macbook does not boot. stuck at grey screen. have tried single user mode, but text stops at AppleIntelCPUPPowerManagement: initialization complete, without anymore prompts. no hash key appears that will allow me to type in: fsck -fy
have my trials for IB in one week and my history notes are all on my hard drive, that has not been backed up. help please =(

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