I have this 7-year old PC with Ubuntu 16.04 LTS, Debian 8.5, and Linux Mint Debian Edition 2. All three OSs are 64-bit versions. The motherboard is an Intel DQ965GF and currently has an EVGA GT 610 video card installed.
The strange thing that is happening is that all three OSs load without problems when the EVGA GT 610 is installed. But if I install an EVGA GT 730 (with 2GB GDDR5 VRAM), then only Ubuntu loads fine. The other two OSs stall right after GRUB (i.e. there is a blinking cursor a few seconds after the GRUB menu).
Ubuntu has the proprietary NVIDIA drivers installed, while the other two OSs have nouveau.
Am I to conclude that the reason that the two OSs don't properly boot up is because they lack the NVIDIA proprietary drivers? If so, why do they boot up when the EVGA GT 610 video card is installed, then??