Thanks for the reply guys.ok, i removed the other HD and the cd drive just my boot HD, still black screen. I replace my hdmi to dvi cord too, but still black screen.
Mobo: Crosshair V Formula v 990fx
CPU: Phenom II 1090T x6
CPU Cooler: corsair H60
GPU: XFX Radeon HD 6950 XXX BE
Memory: Corsair Vengeance 8GB (2 x 4GB) pc12800
HDD: Ocz agility2 SSD 90G
PSU: Ultra X4 1000W +80 Gold
OS: Win7 32bit
bios ver: 0506
case: cooler master HAF932