Prepare to install GCPW
https://apps.google.com/supportwidget/articlehome?hl=en&article_url=https%3A%2F%2Fsupport.google.com%2Fa%2Fanswer%2F9543613%3Fhl%3Den&product_context=9543613&product_name=UnuFlow&trigger_context=a

Sign in to Windows after GCPW installation
https://support.google.com/a/users/answer/9250915?hl=en