Grey screen with message "turn off computer with power button until switch off then press again power button"
Dear all,
I'm very hungry with my iMac and my Time Capsule :
I try for two weeks to restore my iMac without any success...
I wait 80 hours to finally have the message again and again : "to restart your computer : turn off computer with power button until switch off then press again power button".
But my iMac do not work !
Could you help me?
Hello, that's a kernel panic...
http://thexlab.com/faqs/kernelpanics.html
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X 10.6 Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
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I apologize for writing a book, but I think explaining the full story may possibly get me a correct answer. I hope that someone can give me some insight as to what is the problem with my MacBook Pro. I have a MacBook Pro (15-inch Early 2008), model identifier: MacBookPro4,1 running OSX Lion 10.7.5 with 6 GB memory. My wife first noticed a problem with the display. Every so often it would get fuzzy with jumping lines going across the screen making it vitually unviewable. The final time that incident took place the computer froze which required holding down the power button to restart the computer. The computer started up to the point of the Apple logo and the spinning gear for quite some time until the screen darkened from top to bottom displaying the following message in five different languages: "You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again." I have read other blogs and support communities where people get the message intermittently, but my computer would not go past that point no matter what. Through research and the Apple Store I was told that this is a Kernel Panic. The so called "Apple Genius" at the local Apple Store was unable to get the computer to boot past that point even with his gadget. It would not startup in recovery mode, safe mode or off of a disc. I forget exacty what he told me, but he said it was getting past the first two startup steps, but it would not get past the third step which is to mount the desktop. He guessed that it may be a problem with the hard drive; a loose wire or something or other. I disconnected the hard drive completely and took it out. Everything appered to be connected properly. Then I installed it back correctly, but it did not solve the issue. So I guess I disproved his theory of a loose wire... I purchased ProSoft Data Rescue 3 and connected my MacBook Pro to another Apple computer using a firewire 400 cable. I was able to get everything I needed off of the hard drive. I did some more research and I decided to restart the MacBook Pro in verbose mode (holding down the command button and V button). The computer magically started up!!! I was upset that I wasted my money on the ProSoft Data Rescue 3. I managed to take additional items off of the computer and back it up on to an external hard drive. After some time the computer froze. I repeated the power button process to restart and received the same kernel panic. I managed to get the computer to startup approximately six or seven more times via verbose mode; each time the computer staying on for a shorter amount of time before it would freeze. I managed to run Disk Utitlity. I performed first aid to fix the hard drive and it said that the hard drive appeared to be fine. After first aid I erased the hard drive and booted off of a Lion disc to perform a clean install or an erase and install. Lion installed until the progress bar got the the end where I received a message that there was an error installing Lion, please try again. Each time I attempted to install the software I would receive the same message. Eventually the computer would not boot from the Lion disc. I went back to the Apple Store and the Apple Genius was able to get the computer to boot off of his gadget where Lion istalled completely. I set up the computer as a new computer. He said that he partitioned the hard drive as DOS and then back to Mac OS Extended (Journaled) which would get rid of any errors the drive may have had. He guessed that the problem was the hard drive, but was not exactly sure. When I brought it home I installed all of the software applications I had on it previously. Approximately three days later, which may have been the fifth of sixth time starting up the computer, the display became fuzzy again and the computer froze. The computer did restart once and I was able to retreive a "log" which I have pasted below. After if froze for the second time it restarted once using verbose mode and froze almost immediately. After holding down the power key to shut it down and then restart; I received the same kernel panic after the Apple logo and spinning gear which put me right back to square one. Now the computer will not boot via any method. It freezes at the end of verbose mode which forces you to hold down the power button to shut down. I also read that poorly seated ram may cause this issue, but I removed and installed the ram multiple times. I even purchased new ram from Other World Computing (Mac Sales) 6 GB, but that did not make a difference. I think I may see six possible problems on the verbose screen mode, five errors and one warning; I will type them out here:
1. SMC: :smcReadKeyAction ERROR: smcReadData8 failed for key $Num (kSMCKeyNotFound)
2. SMC: :smcReadKeyAction ERROR: $Num kSMCKeyNotFound(0x84) fKeyHashTable=0x0
3. SMC: :smcInitHelper ERROR: MMIO regMap ==NULL - fall back to old SMC mode
4. WARNING - ACPI_SMCCtrlLoop: :initCPUCtrlLoop - no sub-config match for MacBookPro4,1 with 8 p-states, using default stepper instead
5. SMC: :smcReadKeyAction ERROR: smcReadData8 failed for key MOTP (kSMCKeyNotFound)
6. SMC: :smcReadKeyAction ERROR: smcReadData8 failed for key BEMB (kSMCKeyNotFound)
I was hoping that someone could read my log to ascertain wether or not they see a problem that stands out. I was also hoping that someone could tell me if verbose mode provides any information that may be wrong with my computer. I just hope that someone can give me some insight as to what may be wrong with my computer. If it is the hard drive I will easily replace it, but I want to make sure that is the problem first before I waste money on a hard drive or anything else. Please let me know if anyone requires any other information from me.
Thank you!
Interval Since Last Panic Report: 21959 sec
Panics Since Last Report: 1
Anonymous UUID: B62D9AB4-53DD-4F76-90B2-32453302297E
Sat Aug 31 15:20:06 2013
panic(cpu 1 caller 0xffffff80002c4794): Kernel trap at 0xffffff7f81d9d774, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000010, CR3: 0x0000000011d06000, CR4: 0x0000000000000660
RAX: 0x0000000000000004, RBX: 0xffffff809eb71000, RCX: 0xffffff8000892604, RDX: 0xffffff80b69d3aa8
RSP: 0xffffff80b69d3bd0, RBP: 0xffffff80b69d3bd0, RSI: 0x0000000000000000, RDI: 0x0000000000000000
R8: 0x0000000000000000, R9: 0x00000000010751b4, R10: 0xfffffffffffffff4, R11: 0xffffff8000640fd4
R12: 0xffffff809eb71000, R13: 0x0000000000000000, R14: 0x0000000000000000, R15: 0x0000000000000010
RFL: 0x0000000000010202, RIP: 0xffffff7f81d9d774, CS: 0x0000000000000008, SS: 0x0000000000000010
CR2: 0x0000000000000010, Error code: 0x0000000000000000, Faulting CPU: 0x1
Backtrace (CPU 1), Frame : Return Address
0xffffff80b69d3880 : 0xffffff8000220792
0xffffff80b69d3900 : 0xffffff80002c4794
0xffffff80b69d3ab0 : 0xffffff80002da55d
0xffffff80b69d3ad0 : 0xffffff7f81d9d774
0xffffff80b69d3bd0 : 0xffffff7f81d8913a
0xffffff80b69d3c20 : 0xffffff7f81d89928
0xffffff80b69d3c40 : 0xffffff7f81d5be8f
0xffffff80b69d3c70 : 0xffffff7f8087f832
0xffffff80b69d3cb0 : 0xffffff7f8087f93d
0xffffff80b69d3cd0 : 0xffffff7f8088b625
0xffffff80b69d3d40 : 0xffffff7f80889c76
0xffffff80b69d3d80 : 0xffffff80006245ca
0xffffff80b69d3dd0 : 0xffffff8000657d4e
0xffffff80b69d3e30 : 0xffffff80002a3851
0xffffff80b69d3e80 : 0xffffff8000223096
0xffffff80b69d3eb0 : 0xffffff80002148a9
0xffffff80b69d3f10 : 0xffffff800021bbd8
0xffffff80b69d3f70 : 0xffffff80002aef10
0xffffff80b69d3fb0 : 0xffffff80002daec3
Kernel Extensions in backtrace:
com.apple.iokit.IOGraphicsFamily(2.3.4)[D0A1F6BD-E66E-3DD8-9913-A3AB8746F422]@0 xffffff7f80874000->0xffffff7f808acfff
dependency: com.apple.iokit.IOPCIFamily(2.7)[5C23D598-58B2-3204-BC03-BC3C0F00BD32]@0xffffff 7f80849000
com.apple.GeForce(7.3.2)[7E1D7726-416F-3716-ACCB-E1E276E35002]@0xffffff7f81d590 00->0xffffff7f81e1bfff
dependency: com.apple.NVDAResman(7.3.2)[97284661-2629-379E-B86B-D388618E8C30]@0xffffff7f808 bf000
dependency: com.apple.iokit.IONDRVSupport(2.3.4)[7C8672C4-8B0D-3CCF-A79A-23C62E90F895]@0xff ffff7f808ad000
dependency: com.apple.iokit.IOPCIFamily(2.7)[5C23D598-58B2-3204-BC03-BC3C0F00BD32]@0xffffff 7f80849000
dependency: com.apple.iokit.IOGraphicsFamily(2.3.4)[D0A1F6BD-E66E-3DD8-9913-A3AB8746F422]@0 xffffff7f80874000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
11G63
Kernel version:
Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64
Kernel UUID: FF3BB088-60A4-349C-92EA-CA649C698CE5
System model name: MacBookPro4,1 (Mac-F42C89C8)
System uptime in nanoseconds: 62230646656
last loaded kext at 53384504695: com.apple.filesystems.autofs 3.0 (addr 0xffffff7f81efc000, size 45056)
loaded kexts:
com.apple.filesystems.autofs 3.0
com.apple.driver.AudioAUUC 1.59
com.apple.driver.AppleTyMCEDriver 1.0.2d2
com.apple.driver.AppleUpstreamUserClient 3.5.9
com.apple.driver.AppleHDAHardwareConfigDriver 2.2.5a5
com.apple.driver.AppleHDA 2.2.5a5
com.apple.GeForce 7.3.2
com.apple.driver.SMCMotionSensor 3.0.2d6
com.apple.driver.AppleSMCPDRC 5.0.0d8
com.apple.driver.AppleSMCLMU 2.0.1d2
com.apple.driver.AppleMuxControl 3.1.33
com.apple.driver.AppleBacklight 170.2.2
com.apple.driver.AppleMCCSControl 1.0.33
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.0.8f17
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.2.3
com.apple.driver.ApplePolicyControl 3.1.33
com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d8
com.apple.driver.AppleLPC 1.6.0
com.apple.driver.AppleUSBTCButtons 227.6
com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.8f17
com.apple.driver.AppleUSBTCKeyEventDriver 227.6
com.apple.driver.AppleUSBTCKeyboard 227.6
com.apple.driver.AppleIRController 312
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 33
com.apple.iokit.SCSITaskUserClient 3.2.1
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.1.0
com.apple.iokit.AppleYukon2 3.2.2b1
com.apple.driver.AppleUSBHub 5.1.0
com.apple.driver.AppleAHCIPort 2.3.1
com.apple.driver.AppleEFINVRAM 1.6.1
com.apple.driver.AirPortBrcm43224 501.36.15
com.apple.driver.AppleFWOHCI 4.9.0
com.apple.driver.AppleIntelPIIXATA 2.5.1
com.apple.driver.AppleUSBEHCI 5.1.0
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleUSBUHCI 5.1.0
com.apple.driver.AppleHPET 1.7
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 1.5
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.5
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 195.0.0
com.apple.nke.applicationfirewall 3.2.30
com.apple.security.quarantine 1.4
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 195.0.0
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.2.5a5
com.apple.nvidia.nv50hal 7.3.2
com.apple.nvidia.nvGK100hal 7.3.2
com.apple.nvidia.nvGF100hal 7.3.2
com.apple.NVDAResman 7.3.2
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.AppleHDAController 2.2.5a5
com.apple.iokit.IOHDAFamily 2.2.5a5
com.apple.iokit.IOSurface 80.0.2
com.apple.iokit.IOSerialFamily 10.0.5
com.apple.iokit.IOAudioFamily 1.8.6fc18
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleGraphicsControl 3.1.33
com.apple.iokit.IONDRVSupport 2.3.4
com.apple.iokit.IOGraphicsFamily 2.3.4
com.apple.driver.AppleSMC 3.1.3d10
com.apple.driver.IOPlatformPluginLegacy 5.0.0d8
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.IOPlatformPluginFamily 5.1.1d6
com.apple.driver.AppleFileSystemDriver 13
com.apple.driver.AppleUSBBluetoothHCIController 4.0.8f17
com.apple.iokit.IOBluetoothFamily 4.0.8f17
com.apple.driver.AppleUSBMultitouch 230.5
com.apple.iokit.IOUSBHIDDriver 5.0.0
com.apple.driver.AppleUSBMergeNub 5.1.0
com.apple.driver.AppleUSBComposite 5.0.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.1
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOATAPIProtocolTransport 3.0.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.1
com.apple.iokit.IOUSBUserClient 5.0.0
com.apple.iokit.IOAHCIFamily 2.0.8
com.apple.iokit.IO80211Family 420.3
com.apple.iokit.IONetworkingFamily 2.1
com.apple.iokit.IOFireWireFamily 4.4.8
com.apple.iokit.IOATAFamily 2.5.1
com.apple.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOUSBFamily 5.1.0
com.apple.iokit.IOHIDFamily 1.7.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 177.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 331.7
com.apple.iokit.IOStorageFamily 1.7.2
com.apple.driver.AppleKeyStore 28.18
com.apple.driver.AppleACPIPlatform 1.5
com.apple.iokit.IOPCIFamily 2.7
com.apple.iokit.IOACPIFamily 1.4
Model: MacBookPro4,1, BootROM MBP41.00C1.B00, 2 processors, Intel Core 2 Duo, 2.4 GHz, 6 GB, SMC 1.27f3
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR2 SDRAM, 667 MHz, 0x7F7F7F7F7F9B0000, 0x4354353132363441433636372E4D31364643
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 667 MHz, 0x7F7FBAFFFFFFFFFF, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.36.15)
Bluetooth: Version 4.0.8f17, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Hitachi HTS543225L9SA02, 250.06 GB
Parallel ATA Device: MATSHITADVD-R UJ-867
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1a100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x820f, 0x1a110000 / 5
USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0xfd400000 / 2
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0230, 0x5d200000 / 3
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x5d100000 / 2I had already written a book and I did not want to bombard people with more information, but in my previous research I did come across the major issues with the NVIDIA card. I also was well aware that Apple offered a replacement program that ended in December of 2012. I was going to add that in my original post, but I discounted that theory because I put my faith in the so called "Apple Genius" when I made my second trip to the Apple Store. I brought the NVIDIA card issue to his attention and asked him if he thought that may be the problem, but he said no. He said if it was the NVIDIA card that the screen would be completely black and there would be no startup chime. When I experienced the screen issues I thought it was a problem with the NVIDIA card or the logic board. I asked myself, how can a flawed hard drive cause the screen to act funny.
nbar and Rick Warren, I thank you both for your help and insight; people like you are the real "Apple Geniuses." I was hoping there was a way I could wipe the hard drive before I dumped the computer or attempted to sell it. I guess I will look into purchasing a new machine when I have the funds. Again...thank you both! -
I want to buy a app at the i tune store. i bird pro. But the description for the app says it is for i pads. I have friends with i bird pro on there i phone. Can I just press the buy button on the i pad section?
If you are talking about iBird Pro HD, it is for iPad only. There is an iBird Explorer Pro app that is for both iphone and iPad. Same company. See all their apps here: http://www.ibird.com/
If the app you are looking at does not say it is for the iPhone, don't buy it. You'll own an app you can't use (unless you buy an iPad to go with it). -
My iphone's screen goes black and it behaves like that it is switched off.No switches work and the power button also does not respond.The ringtone do not also respond.The only way to switch on the phone is to press home button and power button together.
Pressing the Home button and the sleep/wake or on/off button together until you see the Apple logo and then release is called a reset.
If no change after a reset, the next step is restoring your iPhone. -
I am unable to switch off Passcode on my ipad3. The button for switch off Passcode is greyed out.
I am unable to switch off Passcode on my ipad3. The button for switch off Passcode is greyed out.
Hello again,
I have managed to disable the Passcode.
I checked and I removed a profile that was linked to a business app.
I think it must have been security policy through business app that didn't work anyway.
Thank you very much for taking the time to attempt to resolve my issue.
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my I phone5s screen has suddenly gone haywire everything is enlarged I tried switching off the phone but when I put it on again I could not feed the security nos as they are all enlarged Kindly advise what should Ido
Hi, vernon.
Thank you for visiting Apple Support Communities.
This sounds like you may have enabled the Zoom feature. Here are the steps on how to disable this feature.
iOS: Home screen icons are magnified or large
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Cheers,
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I have a mac book pro running Lion 10.7.4 and every time I use Google Earth The computer crashes by lowering a black curtain and then asking me to hold the power button down until it closes and press the power button again to restart it. Can I fix this? It bugs me when I'm looking at real estate.
I really don't have an answer for that one. I guess that while trying to get things working correctly, I would use the most basic monitor I had which in your case would be the Eizon using the Thunderbolt port and adaptor.
When you boot into Safe Mode the startup is quite slow, but you should get the Apple logo and then the spinning gear below it (release the SHIFT key when it appears.) Then after a little more time you should see a gray progress bar appear below the spinning gear. When that disappears the computer will startup to a login screen. -
Have just upgraded to Mavericks OS X and have lost the closedown/restart function. Pressing the on/off button just switches off the screen. Thanks
Hold the power button for about 7 seconds to shutdown or select shutdown under the menu.
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while downloading mountain lion, a message appears " an error has occurred". Nothing happens when I press the resume button.
Can you try to create a new User Account, and then pull the OS through there?
Mac OS X 10.6: Creating a new user account
http://support.apple.com/kb/PH6651 -
my phone wont power up and its not the battery or the software as ive updated all the latest versions to my pc, it gets to the apple on power on and switches off? help!!!!
got no idea me like??
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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. -
I have a grey screen when booting up my MacBook with stop sign, don't know what to do?
My MacBook Pro will not start up, it has a grey screen and a stop sign. I have looked at other advice and I don't have a snow leopard disk to put in. What shall I do? I have a lot of work on it which I think I have backed it up with iCloud but would like to get my mac functioning again.
You can buy Snow Leopard from Apple for $20.
http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
It's a long shot, but worth testing if the computer will boot in Target Disk Mode. Restart the computer and immediately hold down the T key. If the computer boots with a firewire icon on the screen it can be connected to another Mac in TDM.
http://support.apple.com/kb/ht1661
Post back if the fw icon shows up on the screen and you need more instructions. You will need another Mac to be the host for TDM. -
Cannot shut off computer with powerr on/off switch
Dear friendly Computer Geeks,
My computer is an HP desktop , product s5-1110, microprocessor Intel Pentium CPU g620 @ 2.60 GHz , Bios 7.16 , usb input device, hard drive st31000524as, windows OS 7.
The computer crashed , I could not determine the reason. I was able to save my personal files by starting the computer in Safe mode. Then I loaded the virgin OS 7 as provided by HP in the hard drive partition.
It would not start in the regular way. I then initialized it , pressed the escape key to enter in safe mode, select restore default values then proceed to start windows in regular mode. A problem keeps coming on. After 20 minutes of operation I cannot stop the computer with shut off command or with the Power on/off switch. I must remove the power cord and when I want to restart it I must do as described before.
I would appreciate your help in resolving this troublesome problem.
I appreciate your courtesy and cooperation . I send my Thanks and my best
Please send the answer to: [Thank you for visiting the HP Support Forums. I am sorry to inform you that your post has needed some editing to remove personal information.]
Sincerely,
TroublefixerHello troublefixer,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand you are having issues starting and shutting down your HP Pavilion Slimline s5-1110 Desktop PC running Windows 7. I am providing you with an HP Support document: Testing for Hardware Failures (Windows 7), which I would like you to use to test the hardware on your computer.
Please re-post with the results. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter
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