Fallout 3 GOTY running through steam on a windows 7 XPS8300 desktop keeps freezing on me so much that I literally can not take two steps without locking up and having to End-Task out of it. I have done Tech Support with Bethesda but it didn't work, the game still freezes. The worst part is that it waits to do it the first time until about an hour in and then it does it every few seconds after the game is booted up which means after every attempted fix/reinstall I have to grind through the first hour of the game over and over again waiting to see if it crashes or not and it always does. I know my computer is powerfull enough because I can get New Vegas and games like planet side maxed out with no problem. If anyone has a solution please help me.
Update: Some dual core and quad core CPU users have said that by inserting a new command iNumHWThreads=2 under the General section of Fallout.ini, and setting it to a value of 1, 2 or 4 (typically 2), this prevents freezing at certain points in the game. In practice this setting should not be required, as it appears to restrict the number of threads used by the game, however you can experiment with different values depending on how many cores of your CPU you want the game to use.