The conf_global.php is in your forum root directory.
It will look similar to this
<?php
$INFO = array (
'sql_host' => 'localhost',
'sql_database' => '410b2',
'sql_user' => 'root user name',
'sql_pass' => 'your password',
'sql_port' => 3306,
'sql_socket' => '',
'sql_tbl_prefix' => '',
'sql_utf8mb4' => true,
'board_start' => 1444414185,
'installed' => true,
'base_url' => 'http://localhost/410b2/',
'guest_group' => 2,
'member_group' => 3,
'admin_group' => 4,
);
sql_host - Needs to point to the exact location where the database is stored.
sql_database - Needs to point to your database
base_url - Needs to point to your URL.
Your conf_global.php may also appear to be of the previous versions but this is OK as long as the above is all your correct information