I have just finished building an I7-950 on a Gigabyte X58A-UDR3 motherboard with 6 gigs Corsair dominator 12800 ddr3 1600 mgz 3x2gb ram and EVGA GTS 450 with 1gb ddr5 video card. After completion of build i am ready to try it out i plug in and try to turn on and nothing i mean nothing no fans nothing going to test psu this morning another question where my antec 900 two case has the power wires to plug into the motherboard it has a two prong wire my motherboard has a three prong connection how is this supposed to be plugged in do i need an adapter or does it matter