sapphire ati hd6670 1gb ddr5 problem

Akash Mondal

Honorable
Dec 10, 2013
108
0
10,680
I have ASUS P5G41C-M LX combo mother board with 1 x PCIe x16 slot, intel core2 duo e4400 2GHz,FSB 800MHz processor, 2GB DDR2 RAM & 450W psu. I installed Sapphire ATI HD 6670 1GB DDR5, installed it's driver. During start up there are green vertical bands on the screen and on BIOS menu, but after starting windows the screen is completely dark there is no display. What could be the problem?