Under the 'Language' section, under the 'Preferred Languages' setting, click the ' Add a Language' button.

Select the Time and Language tab on the left-hand side of the settiings window.Click the Start menu and select Settings.If not, your Windows system will render in the language you defaulted to or the language that is at the top of your selection list. Important Note: Whenever changing languages, be sure you have 'English (United States)' selected as your default Windows Display Language.

Input languages are included with Windows, but you need to add them to your list of languages before you can use them. You can edit documents in multiple languages by changing the language (the input language) in which you type. Windows Regional and Language Options control several options on your computer that may vary by regions. Press the ALT key and hold it while typing the number combination on the numeric keypad to the right of the keyboard. To enter ALT codes, be sure your Number Lock key is pressed for your numeric keypad. Though several programs have unique key mappings, the following code key combinations (known as ALT code entry) should work for any program installed under the Windows platform.

Japanese keyboard predictive text