[SOLVED] Installing Nvidia Drivers on Kubuntu 14.04

I had this posted in the "hardware" section but one of the replies stated I should post my question in the "Ubuntu" section.

Look at this screenshot:

https://imageshack.com/i/p85Vfnfhp

Do you see all those Nvidia drivers? I've tried each one and the result, upon rebooting, was a blank black screen. Every time.

WTF is happening?

The only exception is that last one: using xorg x server (it is already installed)

I downloaded and installed from both Synaptic and the "Additional Drivers" function. The screenshot I posted is from the "Additional Drivers" function.

All I want to do is get my gpu recognized so I can use it in a distributed computing project. This is my 2nd computer and I intend to dedicate it just to that purpose.

Why won't those drivers work and what must I do to make them work?

My "box" consists of:
- 64 bit Kubuntu 14.04
- AMD A6-7400k
- Nvidia GTS 250 (g92 chip)
- 4 gb ddr3 system ram

If the drivers provided by the distro aren't working out for you then the first thing I would do is fall back to downloading straight from the vendor. Have you tried that?

I was told not to download straight from nvidia because it could fark my system if the kernal changes, etc. So, no I haven't done so.

Is it possible I must alter some default setting or configuration? All I want to do with the GPU is use it for distributed computing projects.

Got it to work installing "nvidia-modprobe".