it could be the bios needs new code for the cpu and or ram. I would start by pulling the video card and use one stick of ram. and see if the mb posts. if you cant tget it to post see if you have another dimm to see if it the dimm or the mb. also check that you have the 4/8 pin atx power connected. it going to be white just like the 24 pin but it be 4 or 8 pins near the cpu. if that not plugged in the mb wont post right. also check that the video card has all the power pluggs connected.