Death of a Dell E6400

For whatever reason my Dell E6400 is no longer working. I believe that it may be similar to the GPU problems that HP faced a few years ago. Turn on the power and I get a "locked D" error.
According to the Dell website this indicates that the processor is no longer being recognized. I swapped the processor out with a good one and the same issue? ARG! too bad! It was a really nice laptop.
For now I am keeping its carcass around, maybe I'll tear it up and fix it in the near future?