Comment 7 for bug 556736

@illbashu
1) "No original module exists within this kernel" means that there was no nvidia proprietary module before the installation of the driver. This is correct as the nvidia module is proprietary and, as such, is not available in the Linux kernel. This is not an error, it's a statement.

2) the attached nvidia-installer.log shows a failure to modprobe the nvidia module because no nvidia card was detected. It's likely that you tried to install the driver in Virtualbox. If so, this is expected (as you can't use the nvidia driver in Virtualbox). Furthermore we don't support the installation from the Nvidia installer.

3) You haven't provided any Xorg.0.log or dmesg which could help me understand what the problem is.

@IanW
That's expected and, if you enable the driver correctly, there's no need to create a symlink for that:
https://wiki.ubuntu.com/X/Drivers