Won't get past grey screen while starting up....please help

ya my g4 powerbook will get to the grey screen with the spinning gear but won't go no further. If this is a simple fix please let me know.

I had exactly the same problem after updating my pb G4 to 10.4.7 (combo). It crashed and would not restart up past the grey screen. I tried everything for hours...from safe mode, single-user mode, start off cd, target firewire, to reset PMU, PRAM and NVRAM. Nothing worked. The HD wasn't even appearing !
Thinking the HD was dead, I just almost went to buy a new one (or even a new MacBook .
Fortunately some time ago I bought a version of DiskWarrior and started from the CD. After running for 9 hours and freezing several times, it found and repaired hundreds of errors. But still it wouldn't start. At least the HD appeared now in target mode so I backuped my files, started from the OSX CD, deleted my HD and reinstalled OSX, updated 10.4.6 and my Powerbook runs like new... I'll wait a bit before updating to 10.4.7 again !
Hope this helps.
Wycat

Similar Messages

MBP kernel panics on startup - won't get past grey screen

So out of nowhere my unibody MBP (specs, etc below) locked up yesterday while I was watching a video using VLC. It stopped responding to anything so I held down the power button until it turned off. I waited about 10 minutes and turned it back on. Grey screen with spinning cog showed up for about a minute and then kernel panic. Held down power button until it turned off. Tried repeatedly - same results. Won't boot into Safe Mode - still get a kernel panic everytime. It will let me boot the machine into Target Disk Mode. It will boot from my Snow Leopard install disk where I ran Disk Utility and "repaired disk" and "repaired disk permissions" on both the drive and the volume. All the "repair disk" and "repair disk permissions" ended with messages in green type saying that the disk/permissions appear to be OK.
I have an external FW drive used for TM backups for the machine. A fair amount of data has been added since the last TM backup (which was less than 30 days ago) that, ideally, I'd like to not lose by resorting to restoring from a TM backup. It's not the end of the world if the last (roughly) 30 days of data/changes ends up being lost, but I'm willing to work on getting it back up and running without doing an erase and install and then restoring from a TM backup if at all possible.
Definitely if any other information or data is needed from me in order for anyone to assist, please let me know what it is and I'll do my best to provide it.
All help/assistance is greatly appreciated. Thanks in advance!
J
Hardware Overview:
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.66 GHz
Number of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B06
SMC Version (system): 1.41f2
Below is what comes up when it kernel panics at the grey screen:
panic(cpu 1 caller 0x47f5ad): "Process 1 exec of /sbin/launchd failed, errno 13\n"@/SourceCache/xnu/xnu-1504.15.3/bsd/kern/kern_exec.c:3145
Debugger called: <panic>
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x51383e48 : 0x21b837 (0x5dd7fc 0x51383e7c 0x223ce1 0x0)
0x51383e98 : 0x47f5ad (0x5cf950 0x831c08 0xd 0x0)
0x51383ef8 : 0x4696d2 (0x76e1d20 0x1fe 0x736cee0 0x80000001)
0x51383f38 : 0x48fee5 (0x72b7b7c 0x50f46000 0x51383f88 0x226e2f)
0x51383f68 : 0x219432 (0x72b7b7c 0xffffff7f 0x51383f88 0x2a45c9)
0x51383fa8 : 0x2aacb4 (0xffffffff 0x1 0x22f8f5 0x227c4b)
0x51383fc8 : 0x2a1976 (0x0 0x0 0x2a17ab 0x6e24060)
BSD process name corresponding to current thread: init
Mac OS version:
Not yet set
Kernel version:
Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386
System model name: MacBookPro5,1 (Mac-F42D86A9)
System uptime in nanoseconds: 69666095555

As (bad) luck would have it, I don't have the discs that came with the machine . Isn't that always the way?
At any rate, I figured that would be a suggestion and searched the web for looking to see if what I need (AHT) could possibly be downloaded. Looks like some folks have found a way/location to download AHT from the web from some of the posts I've seen, but I've come up empty handed.

Can't get past grey screen at start up (Late 2008 MBP)

Hi all, I have a late 2008, 15inch MacBook Pro. 2.4 GHz, with 4 GB DDR3 RAM, running Mavericks 10.9.2
Symptoms
my problems started after finally upgrading to Mavericks 2-3 months ago. Upon restarting after the install I could only get to the grey/white screen, then it would either freeze, or restart (with a 'your computer was started because of an error' screen). This would go in a cycle half a dozen or so times before eventually starting up, and everything would then work as usual. Now however, it will not start up. It will boot up in Safe Mode every time.
What I have tried
SMC Reset
NVRAM/PRAM reset
Have taken out additionally purchased RAM and tried booting without it
Tried booting without any peripherals plugged in
Repaired Disk with Disk Utility
Run Cleaning and Maintenance software with Onyx
Erased disk (after backing up of course) and tried clean install of OS X from USB (the DVD drive failed some time ago and as such I cannot boot from disc, nor can I conduct a Hardware Test.
I haven taken my machine to an Apple Certified retailer/repair outlet (there is no Apple Store near me anymore), at first they said they couldn't find the problem, then told me the hard drive had failed, which I'm pretty sure is not the case. The error message screen implies my problems may be due to kernel panics, which I don't really understand quite honestly.
I have spent a lot of time researching these issues on the internet and have come across many cases that are similar and have tried all the suggested fixes. The solutions in the cases that have been resolved have not worked for me either unfortunately.
I think that's everything. If anyone can help or has any suggestions for things I may not have tried, I'd be very grateful. I can provide a recent Crash Report if necessary.
Many thanks

Hey, thanks for taking the time to reply.
Here is the most recent panic report, minus the header.
Sun May 4 14:01:58 2014
panic(cpu 1 caller 0xffffff80002dbe7e): Kernel trap at 0xffffff7f811e20a1, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x000000000e7fb000, CR4: 0x0000000000000660
RAX: 0x0000000000000000, RBX: 0xffffff80654f3000, RCX: 0x00000000015d0000, RDX: 0xffffff800b21b7f0
RSP: 0xffffff807a23b780, RBP: 0xffffff807a23b790, RSI: 0x0000000000007059, RDI: 0xffffff80654f3000
R8: 0xffffff807a23b4a8, R9: 0x0000000000000000, R10: 0xffffff807a23b4a0, R11: 0x0000000000ffffff
R12: 0xffffff80654f3000, R13: 0xffffff8000903760, R14: 0xffffff80654f3000, R15: 0xffffff80654f3000
RFL: 0x0000000000010297, RIP: 0xffffff7f811e20a1, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x1
Backtrace (CPU 1), Frame : Return Address
0xffffff807a23b410 : 0xffffff8000222fa9
0xffffff807a23b490 : 0xffffff80002dbe7e
0xffffff807a23b660 : 0xffffff80002f3376
0xffffff807a23b680 : 0xffffff7f811e20a1
0xffffff807a23b790 : 0xffffff7f811d6b89
0xffffff807a23b7c0 : 0xffffff7f811d6a05
0xffffff807a23b820 : 0xffffff7f811d8b44
0xffffff807a23b9b0 : 0xffffff7f80ff1b34
0xffffff807a23ba30 : 0xffffff7f80fa5b35
0xffffff807a23bb60 : 0xffffff7f80fa4b3f
0xffffff807a23bbd0 : 0xffffff7f80ff2ba2
0xffffff807a23bc10 : 0xffffff7f80f20522
0xffffff807a23bca0 : 0xffffff7f80f187a3
0xffffff807a23bce0 : 0xffffff7f80ff32f8
0xffffff807a23bd30 : 0xffffff8000695733
0xffffff807a23bd90 : 0xffffff80006caca5
0xffffff807a23be00 : 0xffffff80002b60ab
0xffffff807a23be50 : 0xffffff8000226bf1
0xffffff807a23be80 : 0xffffff80002139f5
0xffffff807a23bef0 : 0xffffff800021e043
0xffffff807a23bf70 : 0xffffff80002c97bd
0xffffff807a23bfb0 : 0xffffff80002f3b96
      Kernel Extensions in backtrace:
         com.apple.iokit.IOGraphicsFamily(2.4.1)[4421462D-2B1F-3540-8EEA-9DFCB0565E39]@0 xffffff7f80f0f000->0xffffff7f80f45fff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[EDA75271-4E9D-34E7-A2C5-14F0C8817D37]@0xffffff 7f807fe000
         com.apple.iokit.IONDRVSupport(2.4.1)[999E29DA-D513-3544-89D1-9885B728A098]@0xff ffff7f80fa3000->0xffffff7f80fb0fff
            dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[4421462D-2B1F-3540-8EEA-9DFCB0565E39]@0 xffffff7f80f0f000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[EDA75271-4E9D-34E7-A2C5-14F0C8817D37]@0xffffff 7f807fe000
         com.apple.nvidia.classic.NVDAResmanTesla(8.2.4)[80472F2E-D31D-32C4-88BA-2EB3D63 C159F]@0xffffff7f80ff0000->0xffffff7f81257fff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[EDA75271-4E9D-34E7-A2C5-14F0C8817D37]@0xffffff 7f807fe000
            dependency: com.apple.iokit.IONDRVSupport(2.4.1)[999E29DA-D513-3544-89D1-9885B728A098]@0xff ffff7f80fa3000
            dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[4421462D-2B1F-3540-8EEA-9DFCB0565E39]@0 xffffff7f80f0f000
BSD process name corresponding to current thread: WindowServer
Boot args: -x
Mac OS version:
13C1021
Kernel version:
Darwin Kernel Version 13.1.0: Wed Apr 2 23:52:02 PDT 2014; root:xnu-2422.92.1~2/RELEASE_X86_64
Kernel UUID: E9CF78E2-1E9F-3B6F-81A4-FEE6C6D0E4D5
System model name: MacBookPro5,1 (Mac-F42D86C8)
System uptime in nanoseconds: 86865650539
last loaded kext at 86846961429: com.apple.driver.AppleHWSensor          1.9.5d0 (addr 0xffffff7f815cc000, size 28672)
loaded kexts:
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.driver.AGPM          100.14.15
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleBacklight          170.3.5
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.3f10
com.apple.driver.AppleMuxControl          3.4.35
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleLPC          1.7.0
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.nvidia.NVDAStartup          8.2.4
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleUSBTCButtons          240.2
com.apple.driver.AppleUSBTCKeyEventDriver          240.2
com.apple.driver.AppleUSBTCKeyboard          240.2
com.apple.driver.AppleIRController          325.7
com.apple.iokit.SCSITaskUserClient          3.6.6
com.apple.driver.AppleFileSystemDriver          3.0.1
com.apple.driver.XsanFilter          404
com.apple.BootCache          35
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.iokit.IOAHCIBlockStorage          2.5.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.driver.AppleUSBHub          666.4.0
com.apple.driver.AirPort.Brcm4331          700.20.22
com.apple.driver.AppleAHCIPort          3.0.0
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleUSBEHCI          660.4.0
com.apple.driver.AppleUSBOHCI          656.4.1
com.apple.nvenet          2.0.21
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleSMBIOS          2.1
com.apple.driver.AppleACPIEC          2.0
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          216.0.0
com.apple.security.quarantine          3
com.apple.nke.applicationfirewall          153
com.apple.driver.AppleIntelCPUPowerManagement          216.0.0
com.apple.iokit.IOSurface          91
com.apple.iokit.IOBluetoothFamily          4.2.3f10
com.apple.AppleGraphicsDeviceControl          3.4.35
com.apple.nvidia.classic.NVDANV50HalTesla          8.2.4
com.apple.nvidia.classic.NVDAResmanTesla          8.2.4
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.3f10
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.iokit.IONDRVSupport          2.4.1
com.apple.driver.AppleGraphicsControl          3.4.35
com.apple.driver.AppleSMBusPCI          1.0.12d1
com.apple.driver.AppleSMC          3.1.8
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.7.0d10
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.iokit.IOGraphicsFamily          2.4.1
com.apple.kext.triggers          1.0
com.apple.driver.AppleUSBMultitouch          240.9
com.apple.iokit.IOUSBHIDDriver          660.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.6.6
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.driver.AppleUSBMergeNub          650.4.0
com.apple.driver.AppleUSBComposite          656.4.1
com.apple.iokit.IOAHCISerialATAPI          2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily          3.6.6
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.driver.AppleEFINVRAM          2.0
com.apple.iokit.IOUSBUserClient          660.4.2
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IO80211Family          630.35
com.apple.iokit.IOAHCIFamily          2.6.5
com.apple.iokit.IOUSBFamily          675.4.0
com.apple.iokit.IONetworkingFamily          3.2
com.apple.driver.NVSMU          2.2.9
com.apple.iokit.IOHIDFamily          2.0.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.TMSafetyNet          7
com.apple.security.sandbox          278.11
com.apple.kext.AppleMatch          1.0.0d1
com.apple.iokit.IOReportFamily          23
com.apple.driver.DiskImages          371.1
com.apple.iokit.IOStorageFamily          1.9
com.apple.driver.AppleKeyStore          2
com.apple.driver.AppleFDEKeyStore          28.30
com.apple.driver.AppleACPIPlatform          2.0
com.apple.iokit.IOPCIFamily          2.9
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.pthread          1
com.apple.kec.corecrypto          1.0
Thanks again for your help, very much appreciated.

My iMac won't boot past grey screen and it didn't come with a os x disk

My iMac won't boot past grey screen with apple. I've tried booting in safemode but that didn't help and my iMac didn't come with a os x disk.

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 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.”
b. 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.
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
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 either of the techniques in Steps 1b and 1c 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 you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
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, or if a firmware password is set, or if the startup volume is a Fusion Drive or 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 10. 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
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 10
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 11
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 12
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.

IMac won't get past startup screen, no matter what. Pls help?

I just inherited a mid-2010 iMac from a friend. It hadn't been used for months, and now when it is started up, it won't get past startup screen. It shows the 'slot' looking image on the bottom of the white loadup screen, then it's just the apple symbol and the whirly thing going around forever. I've had it going for over half an hour at one point, and nothing changes. I have tried all the different reboot key combos, such as C with a startup disk in it, D for hardware test, command S for safe mode, etc. The only thing which makes any difference at all is using the T key at startup, when I do get the three-pronged white symbol floating around screen.
It is a 21 inch with 500gig, and I believe it's running Snow Leopard. They never had a problem with it before, but now after the months of disuse, it is doing this. Please, can anyone help? Thanks!

I'm not sure if a dead PRAM battery would give you these symptoms, but one possibility is that if the computer was off wall power for months, the PRAM battery, a small coin cell battery that controls certain functions, may be drained and dead.
But, in any case, try an SMC Reset. You must follow the timing for this exactly.
http://support.apple.com/kb/ht3964
And then a PRAM Reset.
Hold down Option-Cmd-P-R together at the startup chime, listen for two more chimes, total three, then release all the keys to finish booting.
You might also try a Safe Boot by holding down Shift at the startup chime. (Cmd-S isn't for Safe Boot, it's single user mode.) Give it much longer to boot than usual, but if it doesn't finish in perhaps 5 or 10 minutes, then you'll have to give up on that.

I'm getting the grey screen during start up and can't boot the computer. I did a cmnd R but worried it would automatically wipe my hard drive and reinstall OS. Is there a risk at cmnd R will result in wiped HD without me actively making that choice?

I'm getting the grey screen during start up and can't boot the computer - MacBook Pro with lion.
I did a command r after doing some research but got nervous that it would automatically wipe my hard drive and reinstall OS.
I was nervous because it asked me for language for software use before any options were presented (such as repair via disk utility). It looked similar to an OS install.So I powered off....Is there a risk at command r will result in wiped HD without me actively making that choice?

Repair the Hard Drive and Permissions - Mavericks, Lion/Mountain Lion
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
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 then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is
three times faster than wireless.

I can't get past white screen when starting up, any ideas?

I Can't get past white screen when starting up, any ideas

http://support.apple.com/kb/TS2570 Mac OS X: Gray screen appears during startup
===============
When posting in Apple Communties/Forums/Message Boards.......It would help us to know which Mac model you have, which OS & version you're using, how much RAM, etc. You can have this info displayed on the bottom of every post by completing your system profile and filling in the information asked for.
CLICKY CLICK---> https://discussions.apple.com/docs/DOC-3602
CLICKY CLICK-----> Help us to help you on these forums

17 MacBook Pro is not booting up. Won't get passed grey screen with Apple wheel spinning below.

17 MacBook Pro is not booting up. Won't get passed grey screen with Apple wheel spinning below.

You may be having a hardware problem that you cannot resolve on your own. Nevertheless...
...hold down the command and R keys whilst booting to try to get to your Recovery partition. If you can, use Disk Utility to try to Verify your boot drive (usually named "Macintosh HD" unless you've renamed it). If the verification fails, try to repair your hard drive. If everything appears to be OK, restart.
If you can't get into your Recovery partition, your problem is likely hardware related. If so, keep your appointment and see what the Apple techs have to say.
Clinton

Won't get past "Platinum screen", keyboard not recognized

Hi all,
I just built a system, haven't even loaded up the OS yet. On the first boot, the computer won't get past the screen which says "Platinum" and says "tab to switch to post" or "del to run BIOS setup." The lights don't flash on the PS/2 keyboard i hooked up (a 6 year old Compaq one). I then tried a 2-year old Dell PS/2 keyboard with the same result. Is this problem fixable? I bought this off of Newegg and there is still time to return it, if I need to. Thanks for your help in advance. Also, if this topic has been beaten to death, I'm sorry. I'm in a state of panic right now since this computer isn't even for me.

I had the same symptoms first time I tried to boot my then-new K8N Neo2 Plat. I had the advantage of having the D-bracket, which was telling me it was hanging in the memory test. I had stuck in some cheapo memory to set up the board, waiting for my good stuff to show up. Turns out the memory was not up to the task. When I stuck in the good stuff, she fired right up. What memory are you using? Are you sure you don't have the D-bracket? it looks like a PCI back-plane USB bracket, except it has 4 LEDs on it (in addition to 2 USB ports and a 1394 port).

HT1349 WHEN I TURN MY IPHONE 3S ON IT ASKS ME TO CONNECT TO ITUNES AND RESTORE. I HAVE DONE THIS 10 TIMES AND STILL GET THE SAME SCREEN. CAN ANYONE PLEASE HELP??

WHEN I TURN MY IPHONE 3S ON IT ASKS ME TO CONNECT TO ITUNES AND RESTORE. I HAVE DONE THIS 10 TIMES AND STILL GET THE SAME SCREEN. CAN ANYONE PLEASE HELP??

Has your phone been jailbroken? If so, you will likely never get it to work again.
You can try placing your phone in DFU mode (search google) and restoring.

Computer won't get past grey start up screen after install

Okay - I made a stupid mistake. I started the installation process - it was taking a very long time so I decided to quit and free up some more space before trying again. When I quit it wouldn't let me go back to my old version - I think I was on 10.3.9. So I installed 10.5 - and it said it installed successfully. I restarted and the computer won't get past the gray screen. I let it go for 30 minute the first time, 15 the second time, and about an hour the third time. Won't go any futher. Any ideas?
Thanks,
-Brad

same thing happened to me (you need to read all the posts as someone will have had the exact problem as you).
any way,
1. re-installl 10.5 from your leopard disk. (put disk in restart holding c key down etc). do not install OS just yet.
2. run disk utility (it does not hurt-click on options button)- repair both disk and permissions
3. run 10.5 installer (archive)
4. download 10.5.2 combo from apple (that is if you can easily find it!)
5. run that install
6 it will restart two or so times
7. total time is 20 mins or so. most of that is in repairs form #2.

Start up won't go past grey screen

Hello,I have the earliest type imac g5, and it has suddenly stopped working. When it starts up it makes the chime sound and then the grey apple logo screen. This screen then gets pixelated and does not progress from here. I have tried loading from the original dvd, but this does not work at all. This computer is about 5 years old now, but if anyone has any ideas...?

WELCOME!http://i29.tinypic.com/2ef7yfn.gif!
"I have tried loading from the original dvd, but this does not work at all."
Need "details." Hard to tell if you are able to boot from your system DVD or you are getting the "grey" screen when booting from your system DVD.
In the meantime, please see Article: http://docs.info.apple.com/article.html?artnum=301287 My computer stops responding during startup
"This screen then gets pixelated"
Now this does not sound good at all. What's worse is that you missed the +Apple Extended Warranty+ program that addressed this issue. Your only other alternatives are to take your computer to your local Apple Store or AASP for a checkup or go the +"fix it yourself"+ route.

MacBook 2010 won't get past loading screen

Hi everyone. I don't live anywhere near an apple store so am hoping I can get some help here. My MacBook won't get past the initial White loading screen with the grey apple logo. A loading bar (which I've never seen before) comes up, loads about 1/5 of the way, disappears, comes back empty, does the same thing then my laptop turns off. About two weeks ago the battery stopped working without being plugged in and each time I turned it on it had reset the date to 01/01/2001. Any advice would be greatly appreciated. Thank you.

Welcome to the Apple Support Communities
The hard drive is damaged. Insert the Mac OS X DVD, press C key when your Mac starts, go to Utilities > Disk Utility and repair the drive. If it doesn't work, take the Mac to an Apple Store.
If you haven't made a backup, download DiskWarrior

Computer won't get past OS screen after unlock, even if I am still using 2 cores

>Phenom II x2 555 BE
>MSI 870a-g54
So I decided to unlock my CPU and have been experiencing a problem. I recently found out that if I even have "unlock core" function enabled in BIOS, even while running it with two cores, the computer won't get past the windows screen. With four cores enabled it obviously does the same. No matter what I try I cannot get past the Windows screen while having the unlock core function enabled.
My BIOS isn't on the latest version. I tried flashing it but I couldn't start it up even after flashed, it gave me the same problem described above. I reflashed it to the version I'm on now and it works, but I still can't unlock. What gives?
Any help would be appreciated.
TL;DR: PC will run as Phenom ii X2 555, but not as Phenom ii x4 B55. Can't get past windows screen.

you need to provide more vcore to the cpu
first try to enable 1 core (core number 3) (disable core number 2 and 4) and increase some vcore. If booted then you have a good core.
Then try this with other core (core number 4) (disable core number 2 and 3), if booted then your both cores are unlockable and are good core (i.e, not defective)
then you can try all cores at same time with some voltage increase (vcore)

Macbook won't go past grey screen

ITs mac book a1181 its pretty old I was on it deleting a bunch of random stuff (like an idoit) now I try to trun it on and it won't get past the grey screen the apple turns into a cirle with a cross through it. Tried installing a later mac os x but it wont take it! help pls

Try resetting the PRAM:
#1 turn one computer
#2 hold command, option, P and R until the computer chimes for a 2nd time and then let go.
Hopefully it's running again after that.

Won't get past grey screen while starting up....please help

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