David...
I checked your manual..... you do not have a 4pin connector for the Cpu, so i guess that is provided thru the main power connector.
Clock jumpers...... where are the settings? Did you try changing them? Double check they agree with each other.
Ex. JP1A1........ 1&2, JP1B1..... 3&4 for 100Mhz.
* verify they are snug.
Verify your memory jumpers are correct.