Hi! I recently bought an alienware 14 (r3) with nvidia gtx 765m graphics card. The problem is that when I tried to manually switch the graphics card in use from integrated switching to discrete graphics by pressing fn+f5 (i/d gfx) (the process requires a reboot - but then after restarting), the laptop does not recognize any graphics card (intel and nvidia) when I checked on the display properties on dxdiag. I also checked on the device manager but the 2 graphics card does not appear on the display adapters. The dxdiag was supposed to show only the nvidia gtx765m as the graphics card running but instead it shows nothing. Please help me on this matter. Thanks.