Database 'dolibarr' already exists

Hello
Trying to install Dolibarr for first time in windows 10 OS, I just follow the installation wizard, in page of “Dolibarr install or upgrade - Configuration file” all field no active to modify the information and when click next get “Database ‘dolibarr’ already exists” If database already exists, go back and uncheck “Create database” option. when back still all field inactive.

what is the wrong and how to solve ?

Pièces jointes :

Probaly you already made a database called ‘dolibarr’, uncheck “Create database”. I this will work!

yes Its there, but I can’t uncheck it as all fields not active

How to uncheck create database option

go to the file htdocs/install/fileconfg.php remove disabled. You will be able to uncheck but uncheck is also not working. still showing dolibarr database exist go and uncheck

Uninstall Dolibarr. Delete the dolibarr folder manually in the c drive after uninstalling. Then Install again. Please check this way.

I uninstalled it using control panel then database was removed.