stop on step 3

iam try to instal gibbon on windows 8.1
I use drive D:\
but i have massage this:
SQLSTATE[HY000] [1045] Acccess denied for user ‘root’@‘localhost’(using password;YES)
how can i solve this problem.
i was try ip publik take from wifi or

This error means that the user credentials are incorrect for the database. If you can, try ensuring root has a password or create a new account