So I have a gigabyte GTX graphics card that my brother has been having problems with I am trying to get it running. He claims that when he put it in a just Would not work. I have a working computer that used to test it. What I am finding Is that it Is producing a signal but it is not displaying anything. I tried on several monitors that I know work and it was the same thing it would register when the computer would turn on that it was receiving a signal but it would not display any graphics not even a bios screen. I have also swapped out different cables Such as HDMI,DVI, and DisplayPort But it does the same thing the monitor registers that there is a signal but nothing is ever displayed. I would love to know what you guys think is going on and thank you in advance for any help.