I dont know if this posted but i will try again. I have currently installed a new graphics card into an old computer that has a bad internal graphic problem. So my primary computer is the same make and model and so i tested it out on it. It didnt work but now when i tried going back to my internal card, it doesnt detect. I think it may have screwed up my computer which i desperately need for work. Now the new and the old display ports dont work. I have removed the new one and still no success. Please help asap!