I just got a Gigabyte GA-M61PME-S2 with a AMD Phenom x4 9950 and 4gb of ram. After it shipped i opened package and it's not working. It shipped like on the picture and its not posting now. It has a GTX 550 with it and its not posting when i have plugged in everything and nothing but motherboard and ram. So what's up with it? Pleas help!