Help! Mac won't start. I hear the ding and see the apple logo but the bar below it never goes further than an inch before the screen goes dark. I have tried unplugging.
Help! Mac won't start. I hear the ding and see the apple logo but the bar below it never goes further than an inch before the screen goes dark. I have tried unplugging.
Hello Templemeads,
Thank you for using Apple Support Communities.
For more information, take a look at:
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/ts1367
Have a nice day,
Mario
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Hi there hhcd92!
I have an article here for you that can help guide you through troubleshooting this situation:
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Mac won't start, gives me the kernel stop-sign
Ok, this is my big big problem..
One day, i was just doing nothing on my dear computer, starting up firefox or something, then suddenly everything stopped. I couldn't do anything. I forced-restarted the computer with the boot-button. When im trying to start it over again, i get to the white startup-screen with the apple-icon in the middle, with the loading-circle underneath it. After a while, the apple-icon changes to a grey stop sign (picture of it further down).
So, what have i tried?
Trying to boot with CD, says i can't install Mac OS, but i can go into the Disk utility, Verify Disk / Repair Disk:
Verifying volume "Macintosh HD"
Checking Journaled HFS Plus volume.
Invalid node structure
Invalid B-tree node size
Invalid node structure
Invalid B-tree node size
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I have time machine on my external hdd, but when pressing the time machine-button after trying to start with CD, nothing happens.
When starting the computer holding down SHIFT-button, i get a white screen with black text, and a square saying 'You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again." The black text in the foreground says:
panic(cpu 0 caller 0x560d25): "Unable to find driver for this platform: \"ACPI\".\n"@/SourceCache/xnu/xnu-1504.9.37/iokit/Kernel/IOPlatformExpert.cpp:1 389
Debugger called: <panic>
Backtrace (CPU 0), Frame: Return Address (4 potential args on stack)
0x508a3da8 : 0x21b510 (0x5d9514 0x508a3ddc 0x223978 0x0)
0x508a3*** : *and the same thing as the other one but with different numbers
0x508a3*** : *and the same thing as the other one but with different numbers
0x508a3*** : *and the same thing as the other one but with different numbers
0x508a3*** : *and the same thing as the other one but with different numbers
0x508a3*** : *and the same thing as the other one but with different numbers
0x508a3*** : *and the same thing as the other one but with different numbers
BSD process name corresponding to current thread: Unknown
Mac OS version:
Not yet set
Kernel version
Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
System uptime in nanoseconds: 368530813
The Apple stop sign:
http://a248.e.akamai.net/7/248/51/1068051125396238/www.info.apple.com/images/kba se/106464/106464_1.gif
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EDIT:
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waitingon <dict ID="0"><key>IOProviderClass</key><stringID="1">IOResources</string><key>IOResou rceMatch</key><stringID"2>boot-uid-media</string></dict>
Got bootdevice =IOService:/AppleACPIPlatformExpert/PC10@0(AppleACPIPCI/SATA@B/AppleMCP79AHCI/P RT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorage Drivers/ST9320423ASGMedia/IOGUIDPartitionScheme/Customer02
BSD root: disk0s2, major 14, minor 2
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hfs: node=0 fileID=4 volume= device=root_device
hfs_mountroot failed: 5
cannot mount root, errno= 19"
Something like that.....There is this Apple Knowledge Base article, which describes your issue:
http://support.apple.com/kb/TS1892?viewlocale=en_US
However, it sounds as though you have tried most of what's there. If it won't allow you to reinstall the OS, then there is definitely something amiss with your hard drive.
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Try:
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Did u take out the screen protection?
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I was downloading up-dates and maybe disconnected before comlete!! I thnk it may have even started to restore but all I know is that it is frozen to the extent that it will not even turn off!! Any help please would be great...it is my aughters ipad and I think she will hate me for the rest of her life if I've mucked it up!!
- Try resetting the iPod
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
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I have transferred photos from my ipod touch onto my laptop.
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Reset the iPod.
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How to put the iPod into disk mode.
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Command-Option-O-F
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reset-all
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