Hi, everybody, two weeks ago I built a new PC: AMD Phoen II x6 1100T, Gigabyte GA 990 FXA-UD3 Motherboard, 16 Gb Corsair 1600 Mhz, OCZ 120Gb SSD, I used the HX 1050 CORSAIR PSU and corsair 800D case, Gigabyte GTX 570 OSC Edition, after I plugged everything ...nothing came up, not even a start up screen...nothing, I swapped the graphics card by another PCI-E but still the same, anyone out there could help me please.