If you're looking to change the language of an application or an operating system, here are some general steps that might help or guide you in the right direction:
specific voice acting packs or set the text language to match. Troubleshooting Common Issues Game Still in Russian/Original Language
Many HP laptop users find this file as part of the HP Support Assistant or printer driver packages.
file itself because it contains machine code. Modifying it directly with a hex editor is possible for text strings but very difficult and prone to breaking the file. If you meant Windows System Language:
A well-coded LanguageChange.exe should run for milliseconds—it changes a registry key or writes a config file, then terminates. If the process lingers consuming 25%+ CPU, you are likely dealing with: