Windows 7 does not boot after grey screen

Hi,
Right after installing Windows 7 Home 64-bit on Macbook Pro with Retina by boot camp, computer restarts, shows black screen with flashing underscore (_) on left corner, shows grey screen next, restarts again, and then repeats. I cannot log in or do anything. What is the problem?
I have used Boot Camp Assistant and created install disk on my USB flash drive.
When I boot BootCamp on VMware Fusion, Windows starts normally.
Thank you for your advice!

Same problem here.
Windows 7 Ultimate, OSX 10.8.2, MBP13"mid2012
After Installing Windows, everything seemed to work fine. i installed the bootcamp drivers, rebootet many times as expectet.
but since yesterday i got the same "endless repeating booting routine with blinking curser".
the curser blinks for a few seconds, then the mac reboots. very disapointing.

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Mac has snow leopard and does not boot has grey screen

IMac has snow leopard and does not boot has grey screen

Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

MacBook does not boot! Grey Screen No Apple Logo or Gear!

Hey guys, I am having this same problem! I have a late 2006 Macbook and I went to my computer this morning, turned it on and noticed that airport was taking awhile to find my internet connection. Everything started to freeze up so I decided to turn off the computer, turn it back on and there was the gray screen with no apple logo or anything. I heard something funny going on in my computer but didn't think of it. I took out my hard drive and put it in a friends MacBook and it still does the samething. I put his hard drive into my Macbook and everything works.
Now I have the external adapter hard drive dealio but for some reason when I connect it up to the working computer, I don't see it showing up on my desktop or anywhere. I have some real important files on there that I need to get off...any other way I can get them off? I think I will eventually need to get a new hard drive...

Please make a Genius Appointment and take it in for service.

IMac Does not boot past Gray Screen

iMac does not boot past Gray Screen. 2008 24" Intel iMac running Mountain Lion with 1TB hard drive.
Problem started yesterday while I was web surfing, and my iMac frooze and shutdown. I rebooted and could only get as far as the gray screen.
On bootup the following things happen:
Startup tone
Gray screen with Apple, and gear spins below Apple.
Once the gear stops spinning, nothing happends.
Troubleshooting steps I have tried:
removed all devices connected to iMac and rebooted, but same symptons occur.
booted into Safe mode and run disk utilites.
     Disk Utilities found no errors on the drive, but did find two permission issues that it was able to fix.
          First permission issue:
                   "Group differs on library; Should be 0; group is 80"
          Second permission issue:
                    "Permissons differ on library; Should be drwxr-xr-x; They are drwxrwxr-t"
Disk Utilities says it fixes these issues and then I reboot, but get the same problem.
I reboot back into Safe Mode and run Disk Utilities and it discovers the same problems listed above with Permissions. It says it fixes them, I reboot, but the same problem occurs. Its as if we are stuck in some sort of loop process.
Booted into Single User Mode and ran the following command:
     /SBin/fsck -fy   it reports back, Volume Apprears to be ok.
I reboot, same issue !
Performed SMC Reset, Rebooted, same issue
Performed PRAM Reset, Rebooted, same issue.
Booted into Recovery Partitioin (Command R) and ran disk utilities. It found the same permission issues listed above. It fixed them. I rebooted. Same problem still.
While in safe mode, I preformed a full time machine backup.
I am out of ideas. Any help would be greatly appreciated.

Hello,
I reboot back into Safe Mode and run Disk Utilities and it discovers the same problems listed above with Permissions.
You can ignore repeated "fixes" it's not really a problem, if it says completed repairs that's all that's needed.
Luckily it boots in Safe Mode, here's basically the steps to try to find out what it is...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons
Though I'm suspecting some corruption to your OS at the moment.

My mac mini does not boot, after backing the enire system onto an external drive with Carbon Copy Clone

My Mac Mini does not boot, after backing the enire system onto an external drive with Carbon Copy Clone. I had switched the start-up disk back to the original of course. Now all I see is the Apple logo. What should I do? Thanks in advance.

Try disconnecting any external devices, especially hard drives
and try rebooting.
If that doesn't help, then :
If you are running Lion, boot to the Recovery HD and run a
Repair Disk on the OSX partition.
If Snow Leopard, boot to the installl DVD and run Repair Disk.
Also, you may want to bookmark this:
http://reviews.cnet.com/8301-13727_7-57345273-263/troubleshooting-the-boot-proce ss-for-intel-macs/?tag=txt;title
for future reference. It is a pretty good explanation of the
Mac boot process and how to identify where problems may be.

HT4061 I have an iphone 5s, does not boot, blinking white screen with black logo, when trying itunes restore from mac and pc, error code 4013 which is usb error, any ideas?

I have an iphone 5s, does not boot, blinking white screen with black logo, when trying itunes restore from mac and pc, error code 4013 which is usb error, any ideas? Does a totally dead battery have that effect? I have had it plugged in to a computer overnight, but maybe does not charge when totally dead?
Please help, thanks in advance all1

Hi eggroll77,
Welcome to Apple Support Communities.
That alert codes does suggest there is a USB related issue. If you haven’t already, try the troubleshooting suggestions in the article linked below.
iOS: Restore errors 4005, 4013, and 4014
I hope this helps.
-Jason

My iMac does not boot after update!!!

I have just update my iMac (Intel) with Apple Software update. I have not updated for quite a while and obvious there were a bunch of stuff to update on my mac. However, when the computer requests a restart, my computer simply does not restart at all. I have tried to make it restart from the apple icon, and it still stay on. So I turn it off manually and the problem kicks in. My computer start with the grey apple icon screen and the little progress indicator, but it does not boot into OS X!!! It remains in a blue screen with the mouse pointer.
I restarted it again unplugging everying and nothing changed. Then I tried Disk Repair and it does not help neither. Then I tried to hold the power button while turning it on till I get the loud beep noise and flashy light. The problem stay the same. I do not want to erase my disk...
Someone Helps!
Intel iMac 20" Dual Core / MacBook Pro 15" Mac OS X (10.4.6)

Interesting. Have you installed any third-party RAM? Is there any possibility that your RAM became loose? Make sure your existing RAM is seated properly.
Have you performed a SMC reset?
Resetting the SMC can resolve some computer issues such as not starting up:
From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button until it turns off).
Unplug all cables from the computer, including the power cord and any display cables.
Wait at least 15 seconds.
Plug the power cord back in, making sure the power button is not being pressed at the time. Then reconnect your keyboard and mouse to the computer.
Press the power button on the back to start up your computer.
Are you able to boot in SAFE mode? If so, you can trouble shoot from there.
Be sure the computer is shut down.
Press the power button.
Immediately after you hear the startup tone, press and hold the Shift key.
Tip: The Shift key should be held as soon as possible after the startup tone but not before.
Release the Shift key when you see the gray Apple and progress indicator (looks like a spinning gear).

Macbook Pro does not start. Grey screen with logo and status bar going on forever.

I have a Macbook Pro, late 2010 running with OS Mavericks. Lately it became very slow but never had major issues like crashing. Lat night, I tried a hard restart because it was stuck and I cannot get it to restart ever since. I get sound and grey screen with logo. The status bar is going on forever but does not boot. Can anyone help, please?

Try a safe boot:
http://support.apple.com/kb/HT1564
If no success, boot into recovery:
http://support.apple.com/kb/ht1310
Select the recovery partition and then from the 4 option menu select Disk Utility.
Open Disk Utility>First Aid and run Verify and Repair.
What are the results?
Ciao.

New MBP i5 does not boot after hard disk swap

Hi there,
I received my new i5 MBP today. After booting it once with the installed HDD to check if it's ok, I exchanged the hard disk for the one in my Late 2008 Macbook Pro. After doing this, my Late 2008 Macbook Pro boots fine with the (new) hard disk from the new i5 MBP, but the i5 MBP does not boot with my old hard disk.
To give you some details:
- I have installed 10.6.3 on the (old) hard disk that's not booting.
- The i5 MBP boots fine from the installation DVD
- Disk utility finds and can read my hard disk, no errors
- PRAM NVRAM reset did not help
- when booting in safe mode, I can see the system stop booting after or while loading Extensions.mkext
My guess is, it tries to boot and load the wrong Extensions for the new system (CPU? GPU?). I have no idea how to fix this.
Any help would be greatly appreciated!

Focx,
Welcome to Apple Discussions.
Inserting the drive from an earlier model MBP will probably not work. The version of the system you have on that HD is designed for earlier hardware so when you put in in your new machine it's going to be recognized. What I'd recommend is re-installing the disk that came with the new machine and of course putting the 2008's disk back in the old machine. Then use Migration Assistant on the new machine and migrate your data from the old machine into the new machine.
This will provide a much more stable system and should work just fine.
Regards,
Roger

Satellite A200-1M4 does not boot and black screen

I really hope someone can help.
After 15 months my Toshiba A200 seems to have given up the ghost.
I tried to switch it on today and although the blue stand-by LED came on and the orange light on the disk drive there were no other signs of life.
I tried and tried but it just would not boot and the screen did nothing but remain blank.
I tried taking the battery out for more than 30mins, pressing F4 - but nothing.
I have no memory cards inserted or additional hardware such as a webcam. Everything has worked fine before now.
I am not very technical so of you do know how to help then please explain as simply as possible.
I really appreciate any help you may be able to offer!

Hello Sarah
You cannot expect that someone here on this forum can offer exact diagnostic and say for sure what the problem can be. We can here just speculate what the problem can be.
If you want to know for sure what the problem is contact nearest service and let them check your notebook.
It can be mainboard failure, maybe just defective CPU or defective board electronic. Who knows?
So, contact service and ask for help. Inform you about repair costs and at the end you can make decision what to do. If the repair is too expensive for you, you can sell defective notebook on eBay and later buy a new one. I have done this last year with my old Tecra.

Macbook pro does not boot after upgrading ram

I have a macbook pro late 2011 which runs with mavericks operating system . I have tried to upgrade my macbook to 8Gb. Macbook does not boot when the two ram slots are filled with 4GB ram but runs well when the slots are filled with 2GB ram. When i try them individually with one slot of 2GB ram and another slot with 4GB they run perfectly which shows status ok in the RAM info. What could be the problem .

Around here, most of us recommend only Crucial and OWC for RAM because it's guaranteed to work with Macs and it's what most of us have. If I were you, I would return the RAM and look at purchasing RAM from either Crucial or OWC. If you can't get their RAM to work then you'll know that there's some trouble with your actual slots.
Good luck,
Clinton
MacBook Pro (15-inch Late 2011), OS Mavericks 10.9.4, 16GB Crucial RAM, Crucial M500 960GB SSD, 27” Apple Thunderbolt Display

Help - Mac Mini does not boot after re-install of OS X

Hi,
I have a Mac Book Pro and Mac Mini. I needed to reinstall my Mac Mini but lost the install disks. The install disks of the Macbook do not work (machine specific). So what I did was boot the Mac Mini in firewire target mode and installed OS X to it from the Macbook. Worked ok. Except for one thing: The Mac mini does not boot the fresh OS X installation. I get a blinking folder icon with a question mark on top of it.
I booted from the Mac OS X install disk, repaired disk permissions etc. and tried to use the "Startup Disk" utility to select the hard drive as a boot device. But that utility does not offer me to select the hard disk, it doesn't even show up (while DiskUtility can perfectly see it).
Any hints for me? I am pretty much stuck right now.
Thanks

Well, see, the fact that it wouldn't let you boot from the MacBook install disks should have been your first clue to not try to do it. There's a reason it wouldn't let you. The MacBook install disks contain a version of the OS specific to the MacBook, in order to prevent people doing what you just tried to do (ie, installing the same copy of the OS on multiple machines).
If you don't have the Mac Mini system disks any more, you'll have to go buy a copy of OS X. You could also ask for help from an Apple Store, if there's one in your area, but I honestly don't know if they would give you new disks. I would think they should (for a small fee), since Mac Mini system disks would be useless to anyone who didn't already own a Mac Mini, but you never know.

Windows 7 x64 Professional does not boot after install

Hello.
I created a Windows 7 VM in Windows Server 2012 R2 Standard Hyper-V, all the installation process done successfully, but after installation, it failed to boot and shows a black screen, and didn't boot after it.
Following is the event log occurs.
'Win-7_QA-Testing' was faulted because the guest executed an intercepting instruction not supported by Hyper-V instruction emulation. If the problem persists, contact Product Support. (Virtual machine ID 5B827557-7009-4D83-AA7C-26A45651EC3A)
VmName
Win-7_QA-Testing
VmId
5B827557-7009-4D83-AA7C-26A45651EC3A
FailureCategory
<not a known problem>
InstructionByteCount
0
InstructionBytes
Rax
0x10
Rbx
0x80
Rcx
0x0
Rdx
0x80
Rsp
0x200
Rbp
0x6e08
Rsi
0x25da4a
Rdi
0x7da4a
R8
0x0
R9
0x0
R10
0x0
R11
0x0
R12
0x0
R13
0x0
R14
0x0
R15
0x0
Rip
0x9d
Rflags
0x10002
FpControlStatus
7F030000000000000000000000000000
XmmControlStatus
0000000000000000801F0000FFFF0000
Cr0
0x10
Cr2
0x0
Cr3
0x0
Cr4
0x0
Cr8
0x0
Xfem
0x0
Dr0
0x0
Dr1
0x0
Dr2
0x0
Dr3
0x0
Dr6
0xffff0ff0
Dr7
0x400
Es
0002000000000000FFFF000020009300
Cs
00000B0000000000FFFF000000B09F00
Ss
0002000000000000FFFF000020009300
Ds
0002000000000000FFFF000020009300
Fs
0002000000000000FFFF000020009300
Gs
0002000000000000FFFF000020009300
Ldtr
0000000000000000FFFFFFFF00000000
Tr
0000000000000000FFFF000000008B00
Idtr
000000000000FFFF0000000000000000
Gdtr
000000000000270000002B0000000000
Tsc
0x3b48531f8c6
ApicBase
0xfee00900
SysenterCs
0x0
SysenterEip
0x0
SysenterEsp
0x0
PendingInterruption
0x0
Any help will be appreciated.
Thanks

How many vCPU and how much RAM have you given the VM?
Are you using alt +F10 and going into the shell to format the VHD and prior to the installation?
Are you using media that has SP1 slip streamed into it?
Have you tried forcing the vm off and then back on again?
Brian Ehlert
http://ITProctology.blogspot.com
Learn. Apply. Repeat.
vCPU = 1
RAM = 2048MB
No, I haven't try formatting the VHD between the window installation. This is the first time I'm facing the issue. It is a simple windows 7 pre activated iso file, not powered by SP1. I have tried forcing the VM off and ON again, but simply i can't get the
window screen back. Whenever the VM malfunctioning like this, then it cannot be shut down from the Hyper-V directly, but to make the VM Turn Off manually.

Windows NT does not boot after installing NI-CAN 1.6.0 or security update

We are running Windows NT 4.0 SP 6 english with MS IE 5.5.
On one machine we had NI-CAN 1.6.0 installed. After installing the security update from Microsoft over the web the machine did not boot.
On another machine the security update was installed. After installing NI-CAN 1.6.0 the machine booted but hangs during logon. On this machine we installed Windows NT, MS IE 5.5 the security update and NI-CAN from new and the effect was the same.
Does anyone else have similar experience with this problem?
Machines with Windows 2000 and XP work well with NI-CAN 1.6.0.
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

Hi,
I haven't found any known issues. I going to try it out here. What's the security update you're installing?. I noticed there's a bunch of them in the Microsoft web site.
What CAN hardware do you have (PCI, PCMCIA, etc)?.
Let me know this details and I'll try to reproduce the problem.
DiegoF.
National Instruments.

Grey Window - Does not open after Running a Form

Hello!
I have the following problem:
I just installed Oracle 9i-Developer Suite.
After installing it, I wanted to run a form (also made in Forms 9i).
So, I selected one form , connected to the database and Run it.
The first time, a dialog appeared informing me i need to instal Jinitiator1.3.1.9.
So, I installed JInitiator and Run the form again.
The result is that it does not open. It seems to be blocked.A grey window apppears and that is all. After some minutes (about 30 minutes after), 2 error messages appear:
1.FRM-92101 : A Failure has occured on the Server. you will need to reestablish your session.
2.FRM-92050 : Failed to connect to the Server. /forms 90/190servlet -1
Please tell me what to do next to run this form (or any other form).
If an aplication is runned, and it uses Jinitiator 1.3.1.13 everything seems to be ok.

If you are getting the applet background (usually gray or tan colored), it means the http listener (oc4j) is likely already running. This is confirmed by the request to install jinitiator. If the listener was not running, neither of these events would occur.
Before going to far, I have to ask.... do you know how old 9i is? Also, "9i" could possibly be one of two versions 9iR1 = Forms 6.0.8 and 9iR2 = Forms 9.0.2. Both of these versions were desupported long ago. This is important to know for several reasons.
1. Even if you actually have a valid support contract with Oracle, they will not be able to offer much assistance as Support is not able to report new bugs against these versions and in some cases, can no longer refer you to documentation as some of it has already been obsoleted.
2. Because these versions are so old, they will not likely run on newer operating systems. For example if you are using Vista, Win7, Win2008, etc, Jinitiator will not run on these platforms. Since neither of these Forms versions was certified for use with any of the JRE versions that were supported on these newer operating systems, the only solution that makes sense would be to upgrade the Forms version.
Apparently, you partially see the problem as you indicated that it works when using JInit 1.3.1.13. Even this version is very old. In general, Jinitiator is no longer supported either, but the latest and last version is 1.3.1.30. So you can see that the latest version is many releases newer than .13. If you are not using one of the platforms I mentioned above, you may have more luck with a newer jinit version. You can download 1.3.1.30 from MyOracleSupport using Patch ID 7410076. If you do not have access to MOS, you may be temporarily out of luck as these files are currently not available on OTN although may return once the recent migration has been completed.
Regarding the errors you noted:
FRM-92101 generally indicates that the runtime (ifweb90.exe) was not able to start or crashed after it was started.
FRM-92050 generally means there was a problem with the url or the related session ID or header info. This can occur if your machine is not properly configured in DNS, as well as many other possible causes. Assuming you are using the Forms Builder to run your forms, try changing the url from the host name to "localhost". In other words:
http://localhost:<port number>/forms90/f90servlet
Regardless, upgrading will be you first best action.

Windows 7 does not boot after grey screen

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