yeah, it shuts down and reboots constantly. I can't believe my luck that the exact same problem happened in 3 exact same units. I can't help but think if there was anything I could have damaged while taking the boards out and putting it back in but can't think of anything.
hey, saw your post in reddit as well. looks like youve found a solution.
you installed the fan flipped to the wrong side so, the hot air was being blown back into the d3.
anyways, hows the machine doing now.