How to change the display language on the ASUS UX21E series laptops is as follows:

Windows 7 language packs can only be installed on computers running Windows 7 Ultimate or Windows 7 Enterprise.

1. Please first check the Windows system version on your computer in "Control Panel" - "System and Security" - "System".

2. If your computer is running Windows 7 Home Basic (Windows 7 Starter) or Windows 7 Home Premium (Windows 7 Home Premium), you can purchase the Windows 7 upgrade key product package (Windows Anytime Upgrade) to upgrade to a higher Windows 7 version and then install the Windows 7 language pack.

3. If the computer is running Windows 7 Ultimate or Windows 7 Enterprise, please install the Windows 7 language pack.