im Upgrading from a gtx 960 2gb to 1060 3gb at the moment.. my gtx 960 was on its way out and the 1060 was the best i could do... anyway the 960 still kind of works so i know my motherboard cpu ram psu ect are all ok.. but when i swapped it out for the 1060 there was no display output.. i tried every port on the back of the gpu and many different hdmi/dvi cables.. when i put the 960 back in to the computer everything worked fine..help