Hello to all Fallout Fans and all gamers. I have just upgraded my Computer to WIN & Ultimate 64bit. Now the problem starts, I have Tried to (RE-INSTALL) my "LEGAL" copy of Fallout New Vegas that I have had since the day it was released here in Australia. I have played over 600hrs as I like to play it on the hardest and I play every part of the game, But I have just purchased the 2 DLC's and when I tried to install it on my computer NO WAY, I have Installed it then Uninstalled it I have even installed it through Steam and no matter what I try I cannot get the game to work. The Game installs and when I go to play, the game shows the Preview part and then shows the section where I can Start a new game or go to a Save point. I have tried all of these opportunities and the minute the game wants to start, (It goes blank and a box appears" this box states "Fallout NV, Fallout NV has stopped working." a problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. Through The Steam install I was asked to " Click on the game. Right click Properties, Click Local Files, Click on Verify Integrity of game cashe." the process starts, 0 of 1 Files, Verify 1 of 1 Files, 100%, 1 File failed to verify and will be reacquired. Close the box. I have tried all the forums I could fine and everything other gamers and administrators had asked me to do but still no game it still fails. If there is anyone out there who has had the same problem with this game or any other game and has been able to fix this mess. I ask you to PLEASE HELP ME, and I ask if you can please put how to do this as simple as possible as I am not a computer wizard. just another Dummie.. If you require my Email Address I will supply it to you. Thank You, Grumpygramps.