Firstly when i run the game, it shows the first GUI where you can change the options and/ or play the game, when i click play the game runs fine, but when i click new game like a pre-in game cut scene plays and after, whoever i'm the protagonist of at that time is shot, the next screen i get is that it says 'Fallout NV has stopped responding' i can't press wait, it's either 'Close' or 'Check for Solutions and Close' i've tried different graphic settings, uninstalling and reinstalling, uninstalling my .Net framework and reinstalled to the latest version and still the same problem? Help please, i am VERY EAGER to play the Fallout Series through and through.

My system Specs (DETAILED) are as Follows:

Intel i5-2500K Sandybridge 3.3Ghz Quad Core Processor (Stock Cooling, Stock Voltage and Speed)
Corsair Vengeance DDR3 8GB Ram 1666Mhz 2x4GB
ASUS EAH6850 1GB GDDR5 790MHz (Can be Overclocked to 910MHz)
1TB Western Digital Caviar Black
Corsair Modular TX650M (650 Watt)

please may i have some sort of answers, haste would be greatly Appreciated

Considering the Asus video card, do you have Asus's GamerOSD utilities installed? If so, get rid of them...they will interfere with the game.