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After completion of the installation page appeared

Warning: mysql_connect (): Access denied for user 'nisreen' @ 'localhost' (using password: YES) in c: \ program files \ easyphp1-8 \ www \ openbiblio \ classes \ Query.php on line 36
Database Query Error - You've Probably Found a Bug
Cannot connect to database server.
Please give all the information on this page to your support personnel.
Query Connecting to database server ... failed. The DBMS said this:
Access denied for user 'nisreen' @ 'localhost' (using password: YES)
Debug Backtrace (most recent call first):
c: \ program files \ easyphp1-8 \ www \ openbiblio \ classes \ Error.php: 100 fatalhandler-> printbacktrace ()
c: \ program files \ easyphp1-8 \ www \ openbiblio \ classes \ Error.php: 68 fatalhandler-> dberror ('Connecting to database server ...', 'Cannot connect to database server.', 'Access denied for user \ 'nisreen \' @ \ 'localhost \' (using password: YES) ')
c: \ program files \ easyphp1-8 \ www \ openbiblio \ classes \ Query.php: 18 fatal :: dberror ('Connecting to database server ...', 'Cannot connect to database server.', 'Access denied for user \ 'nisreen \' @ \ 'localhost \' (using password: YES) ')
c: \ program files \ easyphp1-8 \ www \ openbiblio \ shared \ read_settings.php: 21 settingsquery-> query ()
c: \ program files \ easyphp1-8 \ www \ openbiblio \ shared \ common.php: 81 require_once ('c: \ \ program files \ \ easyphp1-8 \ \ www \ \ openbiblio \ \ shared \ \ read_settings.php' )
c: \ program files \ easyphp1-8 \ www \ openbiblio \ home \ index.php: 6 require_once ('c: \ \ program files \ \ easyphp1-8 \ \ www \ \ openbiblio \ \ shared \ \ common.php' )



If the entered
c: \ program files \ easyphp1-8 \ www \ openbiblio \ classes \ Query.php on line 36

Runs away by line 36
       $ link = mysql_connect (OBIB_HOST, OBIB_USERNAME, OBIB_PWD);