Getting Fallout 3 to run on Windows 7 - 64 Bit
I have been trying everything and anything to get this game to run properly
for months now. this is the result of many, many tests and installs.
I hope this helps to get people running this OS to finally get this game to stop
crashing and actually run
1, May require the 'Games for windows' software from microsoft to get it to launch.
Download and install if needed from Microsoft.
2, After game can be launched, Click play and wait for the title screen and options to appear.
Press, control, Alt, Delete. This brings up the Task Manager
3, Click on Processes.
4, Right click on Fallout3.exe. Click on Properties. Then Compatibility Tab.
5, Set the game to run in compatibility mode for - Windows XP service pack 3
Exit the properties menu.
6, Right click on the Fallout3.exe on the processes page again.
Select - Set Affinity.
7, Click on 'settings for all users' at the bottom of the page if it gives you an error message.
It will show you how many cores the game is currently trying to use.
Remove all the checkmarks from the boxes except the first CORE box, Usually 'Core 0'.
This will run the game on a single core as the game was designed to.
Exit out of the task manager and now close the fallout 3 game that is running.
8, Restart Fallout 3. On the main title and options screen, click on settings, then gameplay.
Turn ALL auto save funtions OFF. You will need to save manually from now on.
Game should run now with VERY MINIMAL Crashes / memory leaks that cause severe slow downs.If you decide to run CPU intensive mods and need a boost, enable one more core.
Enabling another core WILL cause more frequent crashes and other performance problems.
Leave the default Fallout.ini alone and make the changes in the task manager as outlined.
I have extensively tried the Fallout3.ini tweak to reduce the amount of cores the game
runs on. Still Crashes on my system.
Tested on, Alienware MX17R3, Windows 7 64 bit, Intel I7 CPU, Radeon 6870M, 16 Gigs Ram
My Video / render settings are as follows.
AA Turned OFF (enable later if your game runs crash free)
AF Turned OFF (same as above)
Default Ultra Settings
Vsync enabled (see 30 fps fix below) so I can get fullscreen 1600 x 900 resolution
The Dreaded Low FPS 'I'm stuck at 30 fps problem'
In Fallout 3 VSync is enabled at all times, even if this box is unchecked on the launcher menu. You can force VSync off by editing the the Fallout.ini, change the following line
iPresentInterval=1 to iPresentInterval=0.
You should also check to make sure your graphics card's control panel doesn't have VSync forced on. For some unknown (to me) reason, The Vsync should allow up 60 FPS, but it locks the game at 30. This is the only change I can recommend to the default Fallout.ini.
Use the mod 'Archive Invalidate Invalidated!'
And not the invalidate toggles on any mod manager you run, if you are planning on modding the game. I Have found that FOMM tends to crash the game I can't say the same for the Steam Workshop Mod Manager. I Install all mods MANUALLY.
Do not alter the Fallout.ini any more than is absolutely necessary. Its far too easy to ruin all
your hard work and time spent just getting this game to run !
I had tried every fix I could find on the internet, all to no avail. This fix is the only one that worked for me.
I had completely restored my machine to factory settings and updated windows to the lastest updates as of 16/04/2013. To make sure no file remnants would interfere with my fresh install of Fallout 3. Also the possibility that other files or changes were responsible for the fix. Steam was re-installed before I installed Fallout 3 and left running in the background. To help ensure it wasn't an incompatibility with Steam.
This was used with a Retail GOTY copy I have on Disc. Hopefully this works with the Steam Version as well.
GOOD LUCK. It's an Awesome game. Too bad Bethesda dooesn't deem it worthy of a slight reprogramming to fix these issues.
I am currently modding the game and running further tests. I will report my findings and which mods I am running and post the load order. My game has been running crash and freeze free for over 9 hours as of this post.