How to change keyboard layout in Windows

1. Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
   (If you’re using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click Settings, and then click Change PC settings.)
2. Tap or click Time and language, and then tap or click Region and language.
3. Tap or click the language that you want to see Windows in, and then tap or click Set as primary. The Will be display language after next sign-in message will appear under the language.
4. Tap or click Set as primary to move the language to the top of the list. If the language can become your Windows display language, you’ll see Will be display language after next sign-in appear under the language.
5. Sign out of Windows, and then sign back in.

Cr. http://windows.microsoft.com