Question: how to change keyboard language in windows 7 registry?
Answer: Start the registry editor (regedit.exe) Move to HKEY_USERS\. DEFAULT\Keyboard Layout\Preload. Double click on 1 and change the number to your local layout (you could get this by looking at HKEY_CURRENT_USER\Keyboard Layout\Preload1). ...  You may also change HKEY_USERS\. ...  Close the registry editor. Logoff and then on again.