How can I troubleshoot a fatal error when launching Sonic EXE?

First, ensure your game files are complete and haven't been corrupted during download or installation. Re-downloading the game from a trusted source is a good first step. Next, check your system requirements to ensure your computer meets the minimum specifications. Running the game in compatibility mode for an older Windows version can sometimes resolve issues. Finally, verify that no other programs are interfering with the game's execution.