Hi guys. Need urgent help here. I am using m17xr4 just bought a gtx780m and replaced. After that I unlock.the bios I disabled igt. Primary set to peg. And pci set to always enable peg. But when I exit It restarts and from.there on I can.here entering windows sound but screen is always black. Only way is to reset cmos. But I wanted the gpu to.work. In windows despite nvidia driver installed with molded inf. When.running games it's very very very lag. Any experience user here can shed some.light? Thanks.