JCurtis-PBS,
Could you power the server off, remove the power cable and then remove everything but the following from the server?
Also, verify these parts are firmly installed as the system will not turn on if any of the following are not properly installed
System Board
CPU
Heatsink
1 DIMM Memory
Power Supply
If the server powers up with just these parts installed then power down and reinstall each part removed one at a time until problem reappears or until everything is installed. This will tell you which device is failed, if any.
Let me know how it goes.