I have purchased a PNY GeForce GT 730 Graphics Card for my Dell Inspiron i3-3240 desktop, but neither the nouveau drivers nor the proprietary NVIDIA drivers will get me past GRUB without a blank screen. After experimenting, I found that the VGA output after GRUB was being directed by the onboard integrated graphics card VGA.
I looked in the BIOS, but found no option to disable the onboard graphics; Dell Support has informed me that the option was not supported on my computer.
I have tried drivers nvidia-331 and nvidia-340 from the xorg-edgers PPA, the installed nouveau, and the drivers on NVIDIA's website, but all to no avail.
Any suggestions?