New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus • Advice and insight from world-class Apple enthusiasts • Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Kernel Panic 10.6.2 Unsolved Problem


Post Reply New Thread Subscribe

 
Thread Tools
spikespeigol

 
Member Since: Nov 24, 2009
Posts: 3
spikespeigol is on a distinguished road

spikespeigol is offline
I have been up and down search engines trying to figure out how to fix this problem I recently encountered on my iMac.

The problem happend as followed:

I have a 32gb partition on windows vista on my imacs hard drive. Windows wanted me to do an update as usual, and i did. When it was in the third and final stage of configuring the update, the computer froze and I had to restart the computer.

Once i turned on the mac, there was scattered "stuck" pixels all over the screen, some were flashing blue.
I tried to enter windows through the option key at start up but it just brings me to a black screen.

When i try to boot in OSX it loads for an abnormal amount of time then brings me to the multilingual error message. I restarted several times reaching the same error, with the same "stuck" pixels.

I retested the PRAM, heard the two chimes.
THis time, the "stuck" pixels were in a new pattern, vertical lines down the screen, about 8 across every 2 inches.
After resetting the PRAM it still brings me to the black screen in vista and kernel panic message in OSX.

Then...

I entered single user mode, and it found some errors using /sbin/fsck -fy
I ran the command a couple of times to ensure all errors were fixed and the "volume appears to be ok" appeared consistently.

I then used "shutdown -h now" and turned the mac back on.
The pixels were still on the screen and still brought me to the kernel panic screen, as well as the black screen in vista.

I gave up and left my imac off for about 5 hours.
I came back with new hope to try and fix the computer.

I removed all first party ram, two 1 gb sticks, then reinserted.

I turned on the mac and everything was fine.
For some reason the fans in the imac were on full power blowing really fast.
There was no more stuck pixels on the screen and it booted, very slowly, to OSX.
As soon as I entered I used the disk util and repaired permissions. There seemed to be many errors in the flash plugin folder. maybe about 30 of them.

I restarted the imac, and everything was fine, everything was back to normal speed.
Once the imac went into screen saver mode for about 15 min, the screen froze and the flurry screen saver looked distorted. I restarted the imac.

Once i restarted the imac the same "stuck pixels" were back.
I tried using all previous methods, all volumes appear ok in single user mode but I continue to receive the kernel panic message along with the pixels.

I can not start from the snow leopard dvd, because i get the kernel message.
I can not boot into safe mode, because of the kernel message.
I can not use a live linux CD because it takes me to a black screen.

Although I did notice one thing.
Once I use the /sbin/fsck -fy command follwed by the exit command, i receive a string of messages, checking the normal functions.

All appear ok but there is a message mentioning the NTFS partition log check not being clear, then it says unable to mount volume cant (read/write)

I am assuming the vista update somehow damaged something but i am unsure because I was able to boot normally into OSX twice after I received the symptoms the first time.

Does anyone have any idea on how to fix this?

THank you for your time reading this very long post

Intel iMac early 2008 24' Mac OS X (10.6.2)
QUOTE Thanks
chscag

 
chscag's Avatar
 
Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 40,075
chscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond repute
Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

chscag is offline
This is a head scratcher. ?? Your assumption that the Vista update could have damaged something in OS X could very well be correct, however, this looks more like a hardware problem to me.

The stuck pixels throughout the screen area leads me to suspect that something has gone wrong with your graphics adapter in the iMac. The reason I suspect this is that when you left the machine off for 5 hours, that gave everything a chance to cool down. And when you did turn it on the fans were blowing hard (probably from the previous thermal increase). Then after the machine was on for a bit and went into screen saver mode for 15 minutes (screen save mode causes the GPU to get hot), the screen froze again and you were back to the same problem.

OK. How do you solve it? Not by yourself unless you're able to swap out a logic board. If your iMac is covered by Apple care, make an appointment and take it on in and have them look at it.

Hopefully, you've been making regular backups with Time Machine or some other method. Anyway, your hard drive should be OK. You're still going to have to resolve the Vista problem update but I think that can be done easy enough using the Vista recovery method.

Keep us posted. Sorry I couldn't be of more help.

Regards.
QUOTE Thanks
VegasGeorge

 
VegasGeorge's Avatar
 
Member Since: Sep 23, 2006
Location: Las Vegas, NV USA
Posts: 893
VegasGeorge is a jewel in the roughVegasGeorge is a jewel in the rough
Mac Specs: iMac, and Macbook Pro

VegasGeorge is offline
I know it's not helpful, but accounts like this are why I keep Microsoft products off my Mac.

I suppose you could use a bootable external HD, or swap internal HDs and determine if the problem is associated with the drive (including software) or is actually in the computer itself. Really it sounds like a bench repair job to me.
QUOTE Thanks
spikespeigol

 
Member Since: Nov 24, 2009
Posts: 3
spikespeigol is on a distinguished road

spikespeigol is offline
I put my mac into target disk mode and used macdrive 8 from another pc to fix and permissions that may be broken...which there wasnt any.

I completely reformatted the windows partition.
I then installed vista on another partition on the pc...then used a cloner to clone the whole partition over to my mac since vista will not allow you to install the OS to an external hdd.

Tried booting in OSX and vista....still no luck. same kernel panic in osx and black screen in vista.

I called the expert technicians at apple care.
We did about 30 min of trouble shooting...still on luck
We ran the hardware software diagnostic test....
no problems were found.

I put the diagnostic test in loop mode for 24 hours on both standard and extended trials....
Still no problems were found.

The apple care technician said he has no idea whats wrong with the computer....


I have no ideas whats wrong with it but i am preparing for the worst.
QUOTE Thanks
chscag

 
chscag's Avatar
 
Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 40,075
chscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond repute
Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

chscag is offline
I'm going to stick my neck out again here and say it's more than likely a hardware problem. The Apple Hardware Test (even the extended looping test) is not definitive. The reason I say this is that kernel panics are usually caused by hardware errors rather than software.

My thoughts are it could be bad memory or a flakey logic board acting up. If you don't mind spending some money, you might try swapping out the memory modules since that's the easy thing to do. If it turns out not to be the memory, return the modules for a refund.

Regards.
QUOTE Thanks

Post Reply New Thread Subscribe


« iMac drive replacement | eMac blinking screen? »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Mac (map drives) disconnects more often harsha123 OS X - Operating System 0 06-24-2009 04:37 AM
Kernel Panic when waking from sleep vansmith OS X - Operating System 1 03-19-2009 10:03 PM
Kernel Panic brutus910 OS X - Operating System 5 02-26-2009 05:38 PM
kernel panics - what does this mean? jnev OS X - Operating System 4 10-07-2007 01:54 PM
Kernel panic while trying to play a dvd image made by disk util in dvd player. Toanjii OS X - Operating System 6 11-01-2004 12:57 AM

All times are GMT -4. The time now is 03:20 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?