Hi, I also have a problem with database form. You must:
1. open new database ( I used PhpMyAdmin)
2. provide user and pass for database.
You have on the web examples how to set user and pass onto mysql database ( like this link:
How to set PHPMYADMIN password on XAMPP server.htm ).
When you will put user and pass correctly, stop and start Apache and Mysql, try to open database with PhpMyAdmin.
If you will be asked for user and pass, you finished implement user and pass.
Default user for database: root
Default pass: (empty). use root or something what you will not forget.
If you started setup again, now you will edn without a problem.