output error

Hello, I have a zotac gtx 750 ti 1gb and I upgraded from a gt 730. Unfortunately I get no display on boot with the bew graphics card but if I try the old one it still works. I checked all the connections, it just won't give an output. What should I do? The specs are: Asus h61m-k intel xeon e3...

My motherboard has diagnosed a gpu output error, and I am pretty clueless as to how to fix it. I cannot get a display or post with or without the graphics card, and I had my PCIe cables connected and the gpu correctly clicked into the top PCIe slot when the gpu was in. I have also tried hdmi 1...