Open GeForce Experience, download the latest driver, and select "Custom Installation" > "Perform a clean installation."
If you are trying to launch Serious Sam 3: BFE only to be greeted by a black screen or a crash with the error you are not alone. This is a common issue with the Serious Engine 3.5 when it fails to handshake with your monitor's resolution or refresh rate. serious sam 3 cannot set display mode
The fastest way to bypass this error is to force the game to start in a window rather than defaulting to a broken fullscreen mode. Open your . Right-click on Serious Sam 3 and select Properties . Under the General tab, look for the Launch Options box. Type in: +sam_bfullscreen=0 Close the window and launch the game. Open GeForce Experience, download the latest driver, and
Serious Sam 3 sometimes struggles to launch on high-refresh-rate gaming monitors (144Hz, 240Hz, or higher). Open your
Search for the following lines and change their values to match your monitor: gad_iPosX = 0; gad_iPosY = 0; gad_iWidth = 1920; (Change to your monitor width) gad_iHeight = 1080; (Change to your monitor height) Save the file and restart the game. 📺 Fix 3: Lower Your Monitor Refresh Rate
Right-click your Windows desktop and select . Scroll down and click on Advanced display . Locate the Refresh rate drop-down menu. Temporarily lower it to 60 Hz .