Installation error

Good morning,
I’ve installed XAMP that work well.
I can start and stop the services, and i can edit the phpAdmin.
I have created a Database (“prova”)
Next i have downloaded WP from WP.ORG, and copied in XAMP/HTDOC renaming the directory “prova”.

At this point the problem.

CASE1
If i modify WP_CONFIG_SAMPLE, inserting “prova”, “root”, “” (password empty) and save in WP_CONFIG, when i start the browser and I enter localhost/prova I receive this error

Fatal error: Uncaught mysqli_sql_exception: Table 'prova.wp_options' doesn't exist in C:\xampp\htdocs\prova\wp-includes\wp-db.php:2056 Stack trace: #0 C:\xampp\htdocs\prova\wp-includes\wp-db.php(2056): mysqli_query(Object(mysqli), 'SELECT option_n...') #1 C:\xampp\htdocs\prova\wp-includes\wp-db.php(1945): wpdb->_do_query('SELECT option_n...') #2 C:\xampp\htdocs\prova\wp-includes\wp-db.php(2695): wpdb->query('SELECT option_n...') #3 C:\xampp\htdocs\prova\wp-includes\option.php(284): wpdb->get_results('SELECT option_n...') #4 C:\xampp\htdocs\prova\wp-includes\functions.php(1730): wp_load_alloptions() #5 C:\xampp\htdocs\prova\wp-includes\load.php(752): is_blog_installed() #6 C:\xampp\htdocs\prova\wp-settings.php(159): wp_not_installed() #7 C:\xampp\htdocs\prova\wp-config.php(96): require_once('C:\\xampp\\htdocs...') #8 C:\xampp\htdocs\prova\wp-load.php(50): require_once('C:\\xampp\\htdocs...') #9 C:\xampp\htdocs\prova\wp-blog-header.php(13): require_once('C:\\xampp\\htdocs...') #10 C:\xampp\htdocs\prova\index.php(17): require('C:\\xampp\\htdocs...') #11 {main} thrown in C:\xampp\htdocs\prova\wp-includes\wp-db.php on line 2056

CASE2
if I don’t modify WP_CONFIG_SAMPLE, when i open the browser and i enter localhost/prova i receive a page where choose the language (english). After this choice another page is displayed where insert Database name (prova) username (root) password (empty) database host (localhost) table prefix (wp_). After this page i receive the error

There has been a critical error on this website.

Please help me!!!
Thank you