Cannot login =

Hey there.
I’m a new user and i have a problem.
I have just installed my WordPress blog but my problem is that i can’t loggin intro cPanel.
All the nicknames and passwords that I’m trying, they say to me that are wrong.
When i press “Forgot password” or something like that, the same thing. The username and or the email are incorrect.
Can anybody help me ?

Thanks a lot.