. This typically occurs because the emulator cannot find a valid BIOS file for the game you are trying to run. 1. Obtain the Correct BIOS File
The emulator looks in a specific directory for these files. Ensure your file is placed here: Documents\DuckStation\bios %LocalAppData%\DuckStation\bios : You must manually import the file using the Import BIOS button in the app's BIOS settings. ~/.local/share/duckstation/bios 3. Configure DuckStation Settings
How do you know if the file on your computer is actually a real BIOS dump and not a corrupted 1KB text file? You check the MD5 hash.