Hey everyone, for the past two days I've been trying to figure out why my new (3 weeks old) computer wont work with a new GPU. First I tried a Radeon r9 4gb and had no display so i figured it was a defective one so i returned it and today i got the gtx...still no luck. I made sure that the bios loads PCI-E first I disabled and uninstalled the onboard and the old video card's drivers and installed the drivers for this one. I tried with HDMI and DVI....no luck.My PSU is a Fatal1ty 750w Champ1on Series OCZ750FTY. I dont know what else to do, I'm lost please help lol. Everything is plugged in good i triple and quadruple checked.