win7 keyboard layout change from logon screen

I was stuck on the login screen on Windows Server 2003 while my keyboard language was accidentally changed to one that I don't have my password set in.

The solution was to use Alt + Shift to toggle between the keyboard languages.

I had a similar problem. In the end I discovered that to change a keyboard layout, you can use the (left) CTRL-SHIFT combination. To see which layout it is set to, I use the on-screen keyboard.

In some versions of Windows you have the option to choose keyboard language right on the login screen, in the upper left corner of the screen. In your situation, you would have seen the letters EN inscribed in a square. If you click on it, a dropdown appears and you are able to choose the desired language.