This is normal I would keep the card in there connect everything to it and boot up your PC and see if display turns on after 15 minutes(personal experience) if not go on your old gpu and boot up your PC get teamviwere something like that download it make a tons of shortcuts and desktop and if you have a iPad or something download teamviwere on it then make a personal password and username from PC for teamviwere make sure you get rid of password on the desktop and turn your PC off take old gpu out put the new one connect everything than wait for your PC to boot up so give it 5 minutes then try opening those short cuts from your desktop and try to connect with what ever device your using to control the PC and from there if you can see your PC screen go and download latest drivers for the new gpu from nvidia or amd and you should be good I tried this on my old 650 Ti