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A good way to do this is to copy the Mass Effect or Config folder to a safe place. Backup your files: To ensure that your gaming experience will not be damaged, make sure to back up every file that you are about to change.Those files will be prefixed with the word Default (to avoid editing them by mistake). By default they are located at 'X:\Program Files\Mass Effect\BioGame\Config'.
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If it fails to do so, or if the files have incorrect data, the game will read the default config files that are located in the folder where you installed your game.
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