Remove the AWS CLI configuration to setup on Window
On window platform, go to the directory of user and you will find the .aws directory. For delete the configuration of existing user. You can remove the .aws file
cd %USERPROFILE%

For change the User or region setting you can edit the file by open in notepad
notepad config

notepad credentials

For delete the configuration. you simple delete the hidden folder .aws on windows
C:\Users\ersan\.aws>rmdir /s .aws