If this article is true, then it seems plausible you fried the CPU: 3930K C2 Degradation
Yeah, it wouldn't power up at all.
I went through a similar fate:
-PC wouldn't power up at all, thus suspected CPU.
-Replaced CPU, still wouldn't power up, tired another PSU, still nothing. Figured it must be motherboard.
-Replaced motherboard, still wouldn't power up. Tried another PSU, still nothing.
-Bought brand new motherboard and CPU and used different PSU, worked.
-Concluded PSU was what was killing hardware and trashed it.
It was with P67 and a 2500k, at least it wasn't my X79/3930k setupOuch! painful....and expensive I bet. Troubleshooting can be such a pain in the a$$ sometimes.