oh i did that its working cable but it did'nt work i try dvi also .the only signal comes when i unplug the gpu it work with both HDMI AND VgA .if i put the gpu back it did not work no signal at all i put my gpu on my friend pc with monitor and it works he use i3 4gen processor and duel drr3 ram and 450wat from corsair its a small motherboard and i put his gpui on my pc without 6pin and it works