Error 8007012a or 80070057 may occur when attempting to change the keyboard layout in the Windows Recovery Environment

When booting to the Windows Recovery Environment, you may encounter the following problems:

• The default keyboard layout is set to English, even though though the Windows Recovery Environment was customized by the original equipment manufacturer (OEM) to Japanese, Korean, or Chinese for all language, timezone and keyboard settings.
• If you attempt to change the keyboard layout within the Windows Recovery Environment, you receive error 8007012a or 80070057 and a message to restart Windows.
• When prompted for your password in the Windows Recovery Environment, you are unable to input non-alphanumeric characters due to the English keyboard layout.

This problem may occur on devices that were preinstalled with an English version of Windows 10 and a Japanese, Korean, or Chinese language pack by the OEM.

To work around this issue, exit the Windows Recovery Environment, launch Windows 10 and change your account password in advance to a password that includes only alphanumeric characters.  If you are in the Windows Recovery Environment because you are not able to successfully launch Windows, it may be necessary to reset your PC.

Microsoft is investigating this issue and will update this article when more information becomes available.