i have gtx 960 asus strix 4gb installed on PCIE3 Slot x16 but it can only reach x2 speed (see pict link below), how can i increase the speed to x16, my mobo asrock z77 extreme 3 usign windows 10 64 bit
pict : http://imgur.com/Ctw3e1i
pict : http://imgur.com/Ctw3e1i