Model A1419 / Late 2013 / 3.2 & 3.4 GHz Core i5 or 3.5 GHz Core i7 Processor, ID iMac14,2

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Why does this machine keep kernal panicking

I have a 2013 iMac with a fusion drive but it won't boot and kernal panics every time. I have tried booting to the Recovery partition (Cmd + R), Booting off another drive, (Option), booting into diagnostics mode (D) and booting into target mode (T). The only one that works is Target mode and it stayed on all night. This morning I decided to remove all RAM sticks except for one and see what happens. It kernal panicked again. Big surprise. I think its a bad logic board but would love a second opinion.... Any one???

Here is a picture of the screen when it dies. It reboots itself pretty quickly afterwards so I had to be fast on the shutter.


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Kernel Panics can be caused by either hardware or software issues. So it's a process of elimination to find the problem. I would pull the drive, use either a external enclosure or universal adapter and start your other machine up from it to eliminate issues there.


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Thanks Mayer, I am hesitant to pull the drive on this machine since it's a Late 2013 iMac, (tapered edge) with a 3TB fusion drive. I would have to break the adhesive seal and then would need some type of adapter for the SSD HDD, which is really the component that is my 2nd guess for Point of Failure. Since posting this, I tried connecting it in Target mode (which is 100% stable when sitting untouched) to my 2011 MBP with Thunderbolt and it shows up in Disk Util as a 3TB drive, but then shortly thereafter forces my MBP to reboot. Does this give you any clues? I have tried booting the iMac off another drive and it does the same kernal panic which points to the MLB for me. But, like I said, this thing has a fusion drive, so I am not sure how that plays into this, if it does anything different than a normal drive would do. Any ideas for me to try, or should I chalk it up as a bad logic board?



Really tough one. It does sound like a logic board, At this point I would back up what you can of the hard drive, take it to an Apple store or ASAP and request a "Flat Rate repair. The cost for this should be around $350.00.




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