so i installed a evga gtx 660 into my hp envy 700-074, ( already upgraded my psu ) and i use display port to dvi and nothing, vga to dvi with adapter and nothing, its not my motherboard because when i remove it my pc works fine. I tried changing my bios but couldnt find anything, i was thinking about uninstalling my current driver but itd be pointless because i get a black screen when i boot, i have integrated graphics at the moment