Looks like the MySQL database is not running. Can you try to use MySQL client (e.g. SQLyog) to test the database connection and credentials?
Hi, the error message says "Access denied for user" which should mean that either the DB username password combination is incorrect, or that user does not have sufficient permissions to access the DB.
Hello it may also be that you cannot access directly with root (it depends a bit on the mysql server configuration). I would recommend you create a database and a user associated with all the privileges before doing the installation.
