смените сами в пути HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\EA Games\Battlefield 3 - "GDFBinary"="C:\\Program Files (x86)\\Origin Games\\Battlefield 3\\GDFBinary_en_US.dll"
на "GDFBinary"="C:\\Program Files (x86)\\Origin Games\\Battlefield 3\\GDFBinary_ru_RU.dll"