Even though you have DirectX 12, Serious Sam 3 needs legacy DirectX 9 files.
If the configuration file is inaccessible or doesn't resolve the issue, you can use Steam's built-in tools to force a startup mode. Right-click on Serious Sam 3 in your Steam Library and select Properties Launch Options box, enter commands like
Fortunately, there are some workarounds and potential fixes that players can try to resolve this issue:
If the game won't open at all, you can manually set the resolution and display mode in the settings file. Navigate to: Steam\userdata\[YourID]\41070\local\ . Open SeriousSam3.ini with . Find and change these lines to match your monitor: gfx_pixResWidth = 1920; gfx_pixResHeight = 1080;
C:\Program Files (x86)\Steam\userdata\[YourSteamID]\41070\local\ SeriousSam3.ini : Use a text editor like Notepad. Modify these lines gfx_bFullScreen = 0; to force windowed mode. gfx_iFinishWidth = [Your Width]; gfx_iFinishHeight = [Your Height]; to match your desktop resolution. Save and Launch
This error usually means the game is trying to launch with a resolution or display mode your monitor or GPU doesn't like. Here are the most effective ways to fix it. 1. Edit the Configuration File Manually
Even though you have DirectX 12, Serious Sam 3 needs legacy DirectX 9 files.
If the configuration file is inaccessible or doesn't resolve the issue, you can use Steam's built-in tools to force a startup mode. Right-click on Serious Sam 3 in your Steam Library and select Properties Launch Options box, enter commands like serious sam 3 cannot set display mode top
Fortunately, there are some workarounds and potential fixes that players can try to resolve this issue:
If the game won't open at all, you can manually set the resolution and display mode in the settings file. Navigate to: Steam\userdata\[YourID]\41070\local\ . Open SeriousSam3.ini with . Find and change these lines to match your monitor: gfx_pixResWidth = 1920; gfx_pixResHeight = 1080; Even though you have DirectX 12, Serious Sam
C:\Program Files (x86)\Steam\userdata\[YourSteamID]\41070\local\ SeriousSam3.ini : Use a text editor like Notepad. Modify these lines gfx_bFullScreen = 0; to force windowed mode. gfx_iFinishWidth = [Your Width]; gfx_iFinishHeight = [Your Height]; to match your desktop resolution. Save and Launch
This error usually means the game is trying to launch with a resolution or display mode your monitor or GPU doesn't like. Here are the most effective ways to fix it. 1. Edit the Configuration File Manually Navigate to: Steam\userdata\[YourID]\41070\local\
