xeon e5-1680v2

Hello everyone. My first post. I have an HP Z420 and it came with a XEON E5-1620v2 4 core 8 threads. I just upgraded with an E5-1580v2 8 core 16 threads and a hp liquid CPU cooler for the z420. When I boot I get code 513 front chassis fan not detected. I don't have one. After I boot. I go...