[SOLVED] Nvidia Geforce 8400GS Rev.3 - Driver

[bitsnpcs]

Hello,

I followed a guide but am still having difficulty installing the driver

Code:

wget us.download.nvidia.com/XFree86/Linux-x86/340.24/NVIDIA-Linux-x86-340.24.run
sudo chmod +x NVIDIA-Linux-*-340.24.run
sudo /etc/init.d/lightdm stop
sudo ./NVIDIA-Linux-*-340.24.run
sudo /etc/init.d/lightdm start

In the terminal I got to lightdm stop and get a black/blank screen and so was unable to continue to enter the remainder of the commands, and used reset/power button on the tower.
I then tried CTRL+ALT+F1 beginning from line 2 of the code.
I get an error message saying Nouveau is in use and is not compatible with Nvidia, I agreed to allow Nvidia to add mod files and followed the instructions to reboot and try again.
After reboot on trying again I get the same error message plus, Nvidia is unable to instal, the mod files are unable to close Nouveau.

Prior to this I tried Synaptic and Ubuntu Software Centre to see if I could locate the driver.