IMac :: Boot Failure Intel (2007) OS X 10.6?
Jun 21, 2010
I know this is a fairly common subject matter but I have tried just about everything suggested but with no success. detailed below are my findings, I was wondering if anyone better qualified than me could suggest a diagnosis?
What does it do?
I hear the fans and hard drive and see the white/grey boot screen with the apple logo and spinning cog. The cog will spin for anything from 5 - 30 seconds before freezing. Some disk activity will continue for a short time afterwards before everything grinds to a halt?
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Dec 11, 2008
The string of problems I've encountered started a few days ago. I normally let my imac go to sleep by itself but, on this occasion I told it to sleep via the apple menu. When I awoke the imac the screen was frozen. No mouse movement, no clock movement, nothing. At this point I turned the power off and back on again. It didn't get past the white screen (before the gray with apple logo). I then tried resetting the PRAM, booting in safe mode, and booting from my os disc. Nothing worked.
After several tens of tries it magically booted. It stayed active long enough for me to back up all my data (transferring at least 100GB), reformat the hdd, reinstall leapord, transfer data back, and use it until I let it sleep again.
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May 22, 2012
why i have to unplug the power cable from the back of my imac after every power failure at my home to get the imac to boot up. I've tried resetting the surge protecter and unplugging there. However, the only option is to unplug the cord from the back of the monitor/imac before it will boot up.Â
Info:
iMac, Mac OS X (10.7.4)
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May 13, 2012
Macbook Pro won't boot. Symptoms preceding failure included failure to open Firefox. When trying to cold boot I can get as far as the start-up sound, the Apple logo, and the spinning whieel (spins for a bit but not for very long) and then major failure. Not running Liom.
Info:
imac 10.1, Mac OS X (10.6.2), also have macbook pro running os 10.5
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May 30, 2012
Mac mid 2007 won't boot after ram DDR2 upgrade from 3G to 4G?
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Jan 4, 2010
Yes I plugged in the block heater.....
Tried to reset the SMC (apple's only advice)
Tried to kick it into boot menu... no luck
managed to boot to Leopard install disk. backed into Disk Utility.... Verify System Disk produces: "Invalid B-tree node size...Disk Verify / Repair fail".
too bad too sad... no more information.
I don't know enough to know whether this is a SW failure or a drive failure, and my searches has led me here.
Also, my very first post in a forum, I read the rules and I hope I have found the right forum for this query.
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Nov 7, 2009
i need some advice on what to do next, my Intel 24" iMac has failed, diagnosed as a faulty logic board by the Apple Genius. I purchased the iMac in Dec 07, and I deliberately did not purchase the extended warranty as this is a desktop unit, that in 20 months of ownership has never been moved, dropped or transported anywhere.
I have no option than to either pay for the repair - �380 or sell on eBay for spares...!
I informed Apple about the Sale of Goods Act, and they have put the owness on me to prove it was faulty from date of purchase...! They have informed me that I need to visit an Apple authorised service centre where they will run a test and produce a report, which will determine if the fault was there in the first 6 months of ownership.
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Jun 5, 2014
I've tried six times to burn 290 photos, exported from iPhoto, to a RW DVD. The pictures export OK, the transfer to the DVD seems to go OK but it's when the disc is being verified that the problem occurs. It gets to somewhere around 25% verified then returns the message below and ejects the disc.
I only seem to have two burn settings:Â Max (2.4x) and 2.4x - I've tried both and failed.
As a test, I sent a mere 10 photos to a disc and that worked. Then I tried 100 to a new disc and it failed again. But the discs' capacity is 4.6 Gb.
In the past I've successfully burned several hundred photos onto many discs from the same manufacturer.
I'm not sure what's going on. Is it possible that the disc burner on my iMac is broken.
Info:
iMac, Mac OS X (10.6.8)
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Dec 8, 2014
While installing windows 7 via bootcamp tonight, I suffered a power failure a minute or two into installation. Upon reboot, I have only a black screen with flashing curse. I have attempted to reboot in safe mode, recovery mode and diagnostic mode, but I think the machine is not recognizing the keyboard.
Info:
iMac, OS X Yosemite (10.10.1), 2014 21.5" Fusion Drive
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Mar 9, 2008
Yesterday my screen (30" Apple Cinema) started showing symptoms of graphics card failure, jagged lines across the screen. I rebooted my Mac Pro and it was gone. Then it happened again an hour later, this time the machine didn't boot, I get the Apple logo, and then it hangs up and the screen is shifted to left (I get apple logo on left side of the monitor instead of the middle) and jagged lines all over.
So the first thing I tested was using Target Disk Mode, it works. I can access my Mac Pro's internal HD's by TDM from my MacBook Pro. Then I tested single user mode, it does boot, I can't read what's written since the screen is shifted to left, but if I type (without seeing) reboot and hit enter, it reboots. So I assume the single user mode is working.
What else can I try to 100% make sure it's my graphics card that failed and everything else is ok with Mac Pro? I already ordered a graphics card replacement but I wouldn't like to be surprised if the Mac Pro still doesn't boot when the card arrives. It won't boot from Apple Startup DVD either. Same thing happens, gray logo then kernel panic with jagged lines all across the shifted screen.
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Oct 2, 2009
Yesterday my screen (30" Apple Cinema) started showing symptoms of graphics card failure, jagged lines across the screen. I rebooted my Mac Pro and it was gone. Then it happened again an hour later, this time the machine didn't boot, I get the Apple logo, and then it hangs up and the screen is shifted to left (I get apple logo on left side of the monitor instead of the middle) and jagged lines all over.
So the first thing I tested was using Target Disk Mode, it works. I can access my Mac Pro's internal HD's by TDM from my MacBook Pro. Then I tested single user mode, it does boot, I can't read what's written since the screen is shifted to left, but if I type (without seeing) reboot and hit enter, it reboots. So I assume the single user mode is working.
What else can I try to 100% make sure it's my graphics card that failed and everything else is ok with Mac Pro? I already ordered a graphics card replacement but I wouldn't like to be surprised if the Mac Pro still doesn't boot when the card arrives.
P.S. It won't boot from Apple Startup DVD either. Same thing happens, gray logo then kernel panic with jagged lines all across the shifted screen.
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Jun 15, 2012
So my girlfriend boss wanted me to fix her computer. So I brought it home turned it on, and it didnt chime but it booted to the gray screen with apple logo/ slashed circle/and folder with a "?" So I made a USB Mac OS x bootable drive (FLASH) held down alt (try using a windows keyboard its fun) was able to select option and install a fresh copy. all seemed well was running really hot so I poped of the screen. HOLY MOLY! this thing is CAKED with dust, and I am not kidding it has literally piles of dust. So I ran updates, and did firmware updates. Turned it off for the night. Â
The next morning I went to radio shack and got Dust remove spray, opened it up made sure I was carful taking off the screen, and blew the sucker out. now its NICE and CLEAN. then i made sure I plugged everything in and turned it on. Drive spun like normal, Optical checked for a CD, and fans are also running normally. but no chime, no nothing stays as silent as normal but doesnt budge, it is like it hangs. Â
Info:
iMac, Mac OS X (10.7)
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Jun 10, 2012
My 2007 Macbook won't boot. When you press the power button it starts as normal, the apple appears and the spinning circle starts. Then the screen goes grey and it sits there. I have to press the power button to shut it down. I took it to a service shop who told me that the hard drive was dying so I replaced the old drive with a new ssd and a fresh install of Lion. No difference. Still won't start. I refreshed the PRAM but made no difference.
Info:MacBookPro, iOS 5.1.1
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Mar 31, 2009
A friend of mine ran into the most surprising thing when he booted up from his MacBook. Instead of seeing the Apple logo, he saw a question mark - ?.
I told him to try and boot from his Install Disc 1 and it managed to as the Apple logo along with the busy progress bar was shown. Then the usual language selection. I told him to select startup disk from the utilities menu and he said that all he could see is network startup and the Mac OS install disk. Even when he tried to repair disk, it said that it wasn't mounted.
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Jun 15, 2012
Just got my new Macbook Pro Retina. Migrated my applications and data from my Macbook Air. Everything worked great. Apple Update advised that new updates were available. I accepted and ran the updates. Now it gets a kernal panic at boot. Can boot into Safe Mode however. I used Command R to reinstall OSX but that did not correct my problem. Same kernal panic persists.
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Dec 2, 2008
I just recently started to experience some very unusual behavior on an older PowerBook G4, and I was wondering if anyone has experienced this before, as I can't seem to find any documented info on this.Basically, out of the blue, the user began to experience issues waking from sleep, while using the laptop closed with external monitor, USB keyboard and mouse. Although a powercord was always connected, the machine seemed to be powering off.For a while, hitting the power button would boot things up again, properly, but not anymore. I have since disconnected all peripherials. Now, when pressing the power button, the machine will beep 3 times and then repeat itself every so often. The sleep led will blink three times, go solid, then repeat. Sometime the harddrive tries to spin, sometimetimes not
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Jan 21, 2010
I have a 2007 Macbook Pro and I just downloaded the new 3.1 boot camp drivers for it, so I can install them in Windows 7.
I've tried running the installer as Administrator but the installation procedure doesn't start and Windows comes up with a message saying that it didn't install correctly.
Whats the trick to getting things to work? I already had to rebuild the Windows 7 install ISO to get past the EFI issues, so I'm wondering whether my machine is not supported.
Presently, I'm using the drivers from my Snow Leopard install DVD which I had to decompress and install one by one. Everything but the track pad seems to be working OK, but it would be nice to get that last thing working.
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Apr 2, 2012
All I get is the grey screen and the little circle with the rotating fan blades. Then they stop spinning and it just hangs.
I cannot boot up. Is this a bad hard drive? Â Are there other keys I could hit to make something work?
Info:
MacBook Pro, Mac OS X (10.6)
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Apr 24, 2012
2007 MBP won't boot. Spinning on grey screen
Info:MacBookPro, Mac OS X (10.5.1)
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May 8, 2012
I upgraded the RAM in my Macbook (late 2007) and the computer won't boot. I have power but no video display. I put the old RAM back in and it worked fine. I was careful to order the correct RAM: DDR2 PC2-5300 667 MHz. Is it possible the memory is bad?
Info:
MacBook
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Nov 26, 2009
I tried to install snow leopard on my 3 mos. old macbook pro and received a failure message with the invalid node structure, rebuilding catalog B-tree message.
Not sure what to do, I tried booting up from the leopard install disk and it took about 15 minutes to boot up and everything is wonky, doesn't work right.
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Nov 7, 2006
when my PowerBook (15", bought new in Aug 2004) wakes from sleep, the harddrive makes a dreaded tapping/clicking sound. It's very prominent and is not your standard HDD "chatter."Often, Finder will hang and I'm forced to power-cycle the machine. Most of the time, it boots without incident.Lately, however, there have been incidents. Tonight, when I got home, it froze. I tried to power-cycle it, but got nothing. I plugged it in.
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Jan 28, 2008
I have a 12" Powerbook G4 running 10.3.9 Panther. I am having problem booting my computer from a Firewire HD. I have done a search in the forum but cannot get a definite and/or successul solution. Forum moderators and my respected macrumor fellows, please feel free to direct me to a specific link if you find the questions redundant.Recently, I have had the HD making terrible noise and several days ago, the computer cannot boot at all. When I pushed the power button, the screen shows a folder in the middle with a Mac face and switches to a question mark back and forth. However, it just gets stuck at that stage. I suspected that I have a HD problem and wanted to boot from my clone Firewire HD. Unfortunately, the computer will not boot with Firewire HD either.
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Jul 6, 2009
when power pressed to boot, it will go into boot, but then the screen starts flickering from dim to bright a clicking sound is heard, the power cord on the side changes from dark to light amber. the screen then goes to black. some times am able to get to log in then it just goes black.- More information- my harddrive had been making erratic noises for about... 3-4 months. some loud clicking... in thinking that the hd failed i bought a 160gb WD Scoirpio blue IDE drive... These problems still persist. even when i option to start up with my external drive, which i have mirrored my hard drive. it will boot up for the external then this clicking noise as noted above.
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Mar 10, 2012
I have recently installed new RAM and an SSD in my late 2009 MacBook Pro, running OS X 10.6.8, and it now frequently hangs when I try to start it up. Here are details:Â
In recent weeks I noticed signs that seemed to point to a failing hard drive. I took the machine to a Genius Bar. The genius tried Disk Utility and a quick diagnostic and could not reproduce an error, but he noted many, many I/O errors recorded in a log file. Â
He said I probably had a failing disk, but it might be a cable issue. He gave me two options: leave the machine with Apple overnight to run diagnostics and perhaps repair if the problem was confirmed, or just take a chance and replace the drive myself, for less money and less downtime. Â
I went to a local computer store, and the salesman there noted that I was using relatively little disk space. He suggested that I swap my failing 160 G disk for a smaller, 120G solid-state drive, which happened to be on sale. I agreed and also bought some new RAM. Â
I installed the drive and RAM, partitioned the disk (with HFS journaling), and restored my files with Time Machine. For that day and the next, everything worked perfectly. Â
The second day after the installation, the system hung while starting up. The Apple logo appeared, the gray spinner appeared, and it just spun. I tried resetting PRAM. I tried safe restart. I started up from the install disk and ran Disk Utility: no problems found. I repaired permissions. I took out the new RAM and put back the old. In some cases after trying these steps, the system booted fine — once. In others, it would not boot the first time, but would boot on the second or third attempt. I reinstalled OS X and updated software. The problem persisted. I installed some freeware to enable trimming the new disk. No better. Â
I have booted many times in verbose mode. During the unsuccessful boots, there is usually a message "Bug: launchctl.c: 3557 (23930):6 ioctl(S6, SIO CAIFADOR_IN6, &ifra6) ! = -1". The next line is the command "fsck_hfs", and the machine hangs. Eventually it sometimes spits out "launchctl: please convert the following to launchd: /etc/mach_init.d/dashboardadvisory.plist". If I let it go for a long time, I sometimes come back to find a long string of I/O error messages, to the effect that media was expect to be there but wasn’t. I think every time I have gotten the launchctl message, it has booted successfully on the next try. Â
During the successful boots in verbose mode, everything happens so quickly that it is hard to say what is going on, but I don’t think it is running fsck_hfs. If it boots successfully and I give it a heavy I/O task, like doing a virus scan, everything works fine. If I run Disk Utility off the installation disk, it says the disk appears to be OK. Â
I started the machine in single user mode and ran fsck manually. It gave me reports similar to running Disk Utility, and told me the disk appeared to be OK. It then gave me the prompt for a new command. I typed "exit". It responded "logout". And hung.Â
One last thing: I just tried a couple of times to restart with the Apple Hardware test. Despite holding down the D key, the test failed to load, and after a long pause, the machine attempted a normal start-up. Â
Info:
MacBook Pro, Mac OS X (10.6.8)
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Nov 1, 2009
I'm using a 20" white intel iMac and cannot manage to remove a linux boot disc from the optical drive.At first, the only way that i managed to boot to the linux disc in the first place was from the Startup Disk menu in OSX. I could not even get to the Startup Manager ('opt' at boot) or boot straight to the disc ('C').Now i'm in a position where no matter what i do, the system boots to the linux disc. I cannot even force the startup into OSX to try to eject the disc from there. I've tried holding all of these keys/combinations at startup
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Dec 18, 2009
There's some known documented issues concerning the Nvidia graphics chip in the particular model of macbook pro I have.
Basically when turning on the machine, the screen is filled with black & white horizontal strips like a piano keyboard, but thats it - it doesn't actually boot up fully at all, you cannot hear the hard drive running !
Would the hard drive have anything to do with this ?
I explained this to apple telephone support & they informed of the article
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& stated that the symptoms were linked.
On taking the mac to an apple store they ran a special 'firmware' boot up 'test' using an instore ipod to determine if it was a faulty Nvidia chip, so as to prove to Nvidia, the company funding the repairs whether it is that to blame.
Because the machine didn't even boot up & complete the 'test' they couldn't say whether it was the graphics chip - so 'no free repair' under extended warranty & the final answer was as usual ' buy a new logic board' that will cure it !
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Oct 1, 2008
I have a single boot disk with just the apps on, and 2 disks in a software mirrored RAID in which I keep all the important stuff.Its just occurred to me, if the boot drive fails won't the software RAID be destroyed as well?Or will it be easy to recover the data off one of the previously RAID1 disks, when the new boot drive is installed?
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Sep 5, 2014
I've had my TIme Capsule for a few years now. Last year I decided to self upgrade the internal HDD to 3TB to actually fit back-ups from my two mac's at home. On my MBP the boot drive failed. It's unfixable unfortunately. how to restore full system on a new HDD on my MacBookPro from TimeCapsule, after boot drive failure?
how to connect the laptop with clean/ empty HDD to MBP and make it boot and install it all from Time Capsule. Moreover, I am not sure how to connect it to Time Capsule, so that it doesn't take 3 days to restore.There is both an ethernet port as well as USB 2.0 one too.Â
That 'old' boot driveis still barely running, I wanted to hand copy at least my iPhoto Library of 110GB in size, but it just keeps crashing, as the file is so big. I mean, I should have it all back-ed up on TimeCapsule,
Info:
TImeCapsule, OS X Mavericks (10.9.4), Seagate Agent GoFlex 1.5TB
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Jun 19, 2014
My iMac won't come on or boot. What can I do?
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