– First, try contacting the hosting provider if the database server is online / if they have any other problem at their end, or they made any changes to your account, or if there are any limitations/restrictions, if the hosting package is set to Windows and not Linux, etc .
– double check your wp-config.php file settings for the database name, database username and database password. This is where most errors occur.
-Then check that you don’t need to change the database host from “localhost” to something else. You can get that info from your hosting provider.
-Check you have actually created a database with the same database name as is in your wp-config.php file.
-Last, but not least, if all that information is correct your database probably has a problem with it, and you may need to contact your hosting provider.
Do not argue with an idiot. He will drag you down to his level and beat you with experience.
