IbookG4 Kernal Panic HELP

[killmequick]

Hello all, i own a mac ibook g4 with a 1.33Ghz processor and 512 MB ram. For some reason the computer will come up and say i need to shut my computer down because an error occurred. Here is the report.

panic(cpu 0 caller 0x000A8B80): Uncorrectable machine check: pc =
000000001CEBC044, msr = 0000000000149030, dsisr = 42000000, dar =
0000000000605B80
AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000
L2FIR = 0000000000000000, BusFir = 0000000000000000

Latest stack backtrace for cpu 0:
Backtrace:
0x00095564 0x00095A7C 0x00026838 0x000A8B80 0x000A7E10 0x000AB880
Proceeding back via exception chain:
Exception state (sv=0x1CF1A780)
PC=0x1CEBC044; MSR=0x00149030; DAR=0x00605B80; DSISR=0x42000000;
LR=0x1CECFB94; R1=0x0CCA3D30; XCP=0x00000008 (0x200 - Machine check)
Backtrace:
0x00032950 0x1CECFB94 0x002CDC8C 0x002CCB54 0x000A9654
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleAirPort3(360.4)@0x1ce92000
dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x1ce47000
dependency: com.apple.iokit.IOPCIFamily(1.6)@0x1ce05000
Exception state (sv=0x1CD93A00)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000;
LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Kernel version:
Darwin Kernel Version 8.0.0: Sat Mar 26 14:15:22 PST 2005;
root:xnu-792.obj~1/RELEASE_PPCModel: PowerBook6,7, BootROM 4.9.3f0, 1
processors, PowerPC G4 (1.5), 1.33 GHz, 512 MB
Graphics: ATY,M12, ATY,M12, AGP,
Memory Module: DIMM0/BUILT-IN, 512 MB, built-in, built-in
AirPort: AirPort Extreme, 3.6f2 (3.90.34.0.p3)
Modem: Jump, , V.92, Version 1.0,
Bluetooth: Version 1.6.0f2, 2 service, 1 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
PCI Card: pci106b,4318, sppci_othernetwork, SLOT-B
Parallel ATA Device: MATSHITACD-RW CW-8124,
Parallel ATA Device: FUJITSU MHV2060AT, 55.89 GB
USB Device: Bluetooth HCI, , Up to 12 Mb/sec, 500 mA
USB Device: Apple Internal Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
USB Device: Microsoft Optical Mouse with Tilt Wheel, Microsoft, Up to
1.5 Mb/sec, 500 mA




any help in locating the issue would be much appreciated. Thanks

 

[Insulin Junkie]

Have you tried this?
Quote from user 'forevermac' from the bleepingcomputer.com forum.

Check the open firmware first as this is eas to do:

Boot the mac, holding down command-option-o-f.

The mac will grey screen and come up with a command line interface.

Type in reset-nvram then hit return
Then type: reset-all and hit return again. The mac will automatically reboot.

If that does not work, I would suggest that it's a memory fault causing the kernel panic. I've seen this a lot where a memory stick has become dis-lodged and needs re-seating. Strange though as it would prevent you from even starting to install mac OS 10.4, which is very stringent about memory.

This thread might help you, since the person is experiencing the same kernel panic, it seems. http://discussions.apple.com/thread.jspa?threadID=1869169&tstart=0

gl

 

[killmequick]

Resetting the nvram worked for about a half hour or so then said i needed to shut down..the weird thing about it is it doesnt always occur during the boot. Sometime it will say i need to restart as soon as it boots the OS and other times it will work fine for an hour or so.

On that forum they are suggesting the memory or airport could have been dislodged. I know for this version both of those items are built in but i am testing turning the airport off anyway. Hopefully it isnt anything else thats been set out of place because i would rather not open the laptop.

 

[Insulin Junkie]

I know for this version both of those items are built in but i am testing turning the airport off anyway. Hopefully it isnt anything else thats been set out of place because i would rather not open the laptop.

Alright, but even if it somehow works with airport turned off, I'd still strongly advise bringing it in to an apple store and having them figure it out, especially before you resort to any radical measures which could nullify your warranty or weaken your case if you screw it up, like opening it up, as you mentioned.