How to change password for root in phpMyAdmin?

Hello,
Maybe this is a simple question but for some.
Please be kind to share your tips. I need to change the password for “root” in phpMyAdmin.
But I don’t find any idea how doing that. No link or tips from phpMyAdmin.
It gives me some notification, but not the way to solve it.
Thanks for your time.

The additional features for working with linked tables have been deactivated. To find out why, click here.
Your configuration file contains settings (root with no password) that correspond to the
default MySQL privileged account. Your MySQL server is running with this default, is
open to intrusion, and you really should fix this security hole by setting a password for
user 'root'.
