Issues with new Intel i7 quad-core processor.?

I suppose this should be something wrong about your BIOS. Intel processors are automatically identified by the motherboard BIOS during the initial boot-up. Since you have reinstalled your operating system, you should also update BIOS revision installed so that your motherboard can identify your processor. After you update BIOS, you should make sure that all cores are enabled in BIOS settings. Hope this helps.