Kernel Panic on Boot. Can't even boot from Install disc :(

Discussion in 'Mac Basics and Help' started by Predator314, May 5, 2010.

  1. Predator314 macrumors newbie

    Joined:
    May 5, 2010
    #1
    24" iMac, 3.06 Ghz CPU, 500GB HD, 2GB RAM

    My imac locked up on me the other day while watching a DVD. There were a few lines and splotches on the screen in various colors and the system just became unresponsive. I rebooted and the system came right back up, but when I started the DVD, it immediately crashed again. After that point, every time I tried to boot, it went straight into kernel panic (You must restart your computer message).

    I tried resetting the PRAM, but that didn't help. I also did the hardware diagnostic test (hold D during boot) and that said everything was OK.

    I was able to boot from the CD. After a few unsuccessful attempts at restoring the OS from backup, it finally worked. Previous tries only resulted in the system locking up. Once I finally got everything running again, the system worked great. I worked it pretty hard in the next 24 hours after fixing it. No problems during use. Then I left for a few hours and came back to LOCKED UP COMPUTER AGAIN! Same squiggly lines on the screen.

    Now I can boot into the hardware diagnostic test if need be. However, I can't boot into the computer any other way. Booting from hard disk, installation dvd/cd, and even Safe mode all cause a kernel panic. Also, I might add, that I had all peripherals unplugged from the machine and still got the kernel panic messages.

    Any ideas? Closest Applestore is 3 hours away. The closest private licensed repair place is 60 miles away. I called Apple Support and they pretty much blew me off because My AppleCare was up about 6 months ago and I'm sure this would be a hard case to do over the phone. They suggested I take it in to get looked at.

    I have no problem ordering parts and taking this machine apart and replacing parts. I'm just really looking for a way to diagnose what is actually broken!

    Thanks!
     
  2. ayeying macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
  3. Visnes macrumors newbie

    Joined:
    May 9, 2010
    #3
    Got the same problem today.

    The graphics went crazy when logging into WoW, the sound was there, but I couldn't move the mouse or use the keyboard. Had to hard reset. When it came back up, I tried again just to see if it would happen again. Sure enough, the thing crashed again, this time though I could move the mouse pointer to the top of the screen and see it although everything else was black.

    I rebooted and got a kernel panic. Rebooted again, got another one. Started the diagnostic tool, it hung up at around 5 minutes. Then I turned it off for a couple of minutes, started again and voila, I'm inside OS X again.

    Backing up everything, and doing all the regular things like verifying the disk, fixing permissions. When that is done I'll reset the SMC and PRAM. I'll probably re-install OS X again just to be on the safe side.

    The not-so-funny thing is that I got the thing back from having its logic board changed about a week ago because last time the whole GPU was all stupid and gave me an orange screen. :p Also sending an e-mail to the tech who fixed it for me, to hear his input.

    I'll keep you posted. ;)

    Forgot. Same hardware, only 4 GB instead of 2 GB, and 1 TB instead of 500 GB.
     

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