OR
X:\Program Files (x86)\Steam\steamapps\common\Fallout 3
2. Right-click on the .exe file for Fallout 3. This will give you a drop-down menu.
3. From the drop-down menu, click on Properties. The properties window will now open.
4. In the properties window, navigate to the Compatibility tab.
5. Enable the Run this program in compatibility mode for option by checking the checkbox located directly beside it.
6. Open the dropdown menu located directly underneath the Run this program in compatibility mode for option and click on Windows XP (Service Pack 3) to select it.
7. Click on Apply and then on OK.
8. Once done, try launching Fallout 3 and check to see whether or not the problem you were facing has been fixed.
