Database error: Could not connect to the database. Please refer to suitecrm.log for details (2)

Dear Team,

Am new to SuiteCRM, Installing this for the first time.
Getting error as mentioned below.
What are the parameters which we need to pass?

My values are:
Database name: suitecrm
Host: localhost
username: ( here which usename i have to give?)
SuiteCRM Application Admin Name : admin
pwd: (which password we need to give? I forgot actually, where can we check these details?)
URL of SuiteCRM Instance: http://localhost/suitecrm
mail: abc@gmail.com

Errors:

Could not connect to the database. Please refer to suitecrm.log for details (2).
Please fix the following errors before proceeding:

Database error: Could not connect to the database. Please refer to suitecrm.log for details (2).

Kindly help me out.

Host: localhost
username:
password:
SuiteCRM Application Admin Name : admin
pwd:

Is this through the install wizard? or the config.php?

Dear,

Thank you for your quick reply.

This is through Installation wizard.

I provided as follow:

username: root
password: root
SuiteCRM Application Admin Name : admin
pwd: (I forgot this password, where shall i change this password?? - pls help me out).