Thanks for your response. Drivers were okay and I use windows 8.1 . I posted this problem in other forums as well. They told me to cut this folders and see what happens: Fallout New Vegas\Data\textures\interface Fallout New Vegas\Data\Menus I did some test to isolate the culprit: Inside the folder: C:\Program Files (x86)\Steam\steamapps\common\Fallout New Vegas\Data\menus\main These two were the culprits. inventory_menu.xml inventory_menu.xml.uio The game seems to run fine without them, I have observed that every time I start the game, It creates a new inventory_menu.xml which is deleted when I close the game. For now I think I would continue with this solution, If I continue further problems I'll post it here.