Up until recently, Fallout New Vegas played just fine on my PC, However, I went to play it yesterday and the game loads as far as the Bethesda splash screen (before the main menu) and then freezes. The only way I can get out of this is to restart the PC.
I have tried validating my Steam cache and I've also tried re-installing the game, to no avail.
I do not have any mods installed. My DxDiag can be found here - http://pastebin.com/gLvyewRw