My friend got an HP Pavioin H8-1214 and an evga 750ti. However, the gpu doesn't work, as it freezes when you try to get past the HP screen. Cannot get to bios or anything. Also, there is no option to switch to legacy boot in his bios (put his old gpu back in to see.) There is an option for it, but nothing happens when I click enter on it. So I am at a loss. Also, its win7 home premium, and I upgraded the PSU. Any help is appreciated.