Powers off randomly; hangs on AHT!
So a client brought in their iMac to my shop for the symptom of randomly powering off whenever it wanted to. I ran it on my bench for 24 hours with no problem, unable to duplicate their issue. They also brought in a second iMac that I was instructed to migrate data from (to the one with random power issues once I fixed it).
Well long story short, the first imac with power issues refused to connect through migration assistant to the other imac (even through firewire) and I was unable to get finder to run without crashing. So I booted into AHT and it started the pre-test hardware probe (which is required before a test can even be ran) and it just HANGS. Also it has powered off for me a couple of times now (before running AHT) and when I tried to power it back on I either got a forever pinwheel or a blue screen with no icons but a mouse pointer.
The "probing your hardware, this may take a minute" message has been running now for over an hour (hasnt powered off again yet) and I am thinking that either the motherboard is bad or the CPU is bad.
Is this a good question?