Hello, I bought a well working 1155 pin CPU socket ECS mainboard (H61H2-M2). And I was too happy to put my Intel i5 3470 cpu. I set the fan, i set everything i need for boot. BUT!!!!, IT doesn't boot! the symptom is the fan spins for 1 and a half secs and stop. My led flashes when i start the computer(it keeps turn ing off!) what should i do? I have changed my Main power. so is it board's problem? or is there my mistake?