I only have one account on my BI Desktop with Admin right, but did not workThe initial login credentials for BI are the login credentials you use for Win10, assuming that account has administrator privileges. I don't think that can be reset.
If I am not mistaken, I believe that it only pulls the first 5 letters of the username to login to BI as the administrator? So try the first 5 letters of your username and the password and see if that does it.I only have one account on my BI Desktop with Admin right, but did not