Byrd,

Well, the one interesting thing that tends to point otherwise is the fact that my 520c also has issues, using the same 2 CPU modules. With the 68LC040, the 520 boots fine with no memory card installed. However, install any of the 3 cards that I have, and the hard drive spins up, the machine powers on, but does not POST. I get no startup chime, and no sad Mac.

- Alex