I recently upraded my computer

Question

I recently upraded my computer with an Asrock Penryn1600SLI-110dB motherboard with an Intel CORE 2 DUO E4600 processor.The symptoms are: When I tried to boot for the first time the cpu and case fans started but nothing else happened. The screen remained blank with no post check and the disk drives did not start. I replaced my old mother board back into the case and everything worked fine. I have de-installed the processor to check if I had done anything wrong it all looks OK to me. The socket pins look in perfect condition.