Problem is user hadoop password:
CREATE-USER: Creating user hadoop
CREATE-USER: Setting password for hadoop
CREATE-USER FAILURE: Exception calling "SetInfo" with "0" argument(s): "The password does not meet the password policy requirements. Check the minimum password length, password complexity and password history requirements.
After this error setup start unistall process
HDP: Starting rollback
Try to respect complexity of password set on your win2012 server. (8 characters, symbol, number, etc).