I built this computer 5 or so years ago, and wanted to upgrade the CPU. It's a C2D system with GA-G31M-ES2L motherboard. The original CPU was a E1400, and I am upgrading to a E8400. Before starting the upgrade, the system worked perfectly fine. I bought a used E8400 on eBay, and installed it. Now when I press the power button the system doesn't post, but all the fans turn on. The case power light turns on, and stays solid, but the HDD activity light does not even turn on at all.
Is it possible that I need to flash the bios of the board, is there anything else that I could have done wrong, or did the guy on eBay ship me a busted CPU.
i7 4770k @ stock (for now) | ASRock Extreme6 x87 | 8GB 1600mhz
Samsung 840 250GB |Samsung F1 - 1TB | Corsair CX430 | Corsair 600T (White)
E1400 @ 2.4GHz | Gigabyte GA-G31M-ES2L | Samsung F1 1TB | 4GB DDR2 800