wordpress admin part is not accesbile after server shifting

There are following possibilities when you cann’t open wp-admin
1.There should be some file missing
2.Some function deny to login in themes files
3.Some plugin may also create issue

Solution:-
1.Replace all files from new WordPress except wp-content and wp-config file
1. Rename your theme folder in wp-content
2. Rename Plugins folder in wp-content

Hope this will work for you
thanks
Rohit

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)