how to change language in windows 7

Install or change a display language

You can change the language Windows uses to display text in wizards, dialog boxes, menus, and other items in the user interface. Some display languages are installed by default, while others require you to install additional language files.

Before you can install a display language, you need access to the language files. These files can be found on your computer, a computer in your network, or your Windows DVD. 

 To install a display language

To install a Language Interface Pack (LIP), double-click the file to open the setup program. To install a Multilingual User Interface Pack (MUI), follow these steps:
1. Click to open Region and Language.
2. Click the Keyboards and Languages tab.
3. Under Display language, click Install/uninstall languages, and then follow the steps.  If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

   Note

   • The Display language section will only be visible if you have already installed an LIP or if your edition of Windows supports an MUI. MUIs are only available in Windows 7 Ultimate and Windows 7 Enterprise.

    To change your display language

   When you change the display language, the text in menus and dialog boxes for some programs might not be in the language that you want. This happens because the program might not support Unicode. For more information about changing the text in menus and dialog boxes for programs that don't support Unicode, see Change the system locale.

   Change the system locale

   The system locale determines the default character set (letters, symbols, and numbers) and font used to enter and display information in programs that don't use Unicode. This allows non-Unicode programs to run on your computer using the specified language. You might need to change the default system locale when you install additional display languages on your computer. Selecting a different language for the system locale doesn't affect the language in menus and dialog boxes for Windows or other programs that do use Unicode.
   1. Click to open Region and Language.
   2. Click the Administrative tab, and then, under Language for non-Unicode programs, click Change system locale.  If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
   3. Select the language, and then click OK.
      To restart your computer, click Restart now.