Website front end error

Only professional ASPS Windows developer apply for the job, we had a problem with SQL database back end, we don't know the previous SQL database password that hosting in Godaddy, we changed the password, but it has caused an issue is that in database connection string defined in no of files, PLEASE NOTE front end and back end are linked, you have to make sure you don't fix the front end and cause back end to fail, Please only serious and professional bidders !! Server Error in '/' Application. Login failed for user 'novaecorp1'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: [login to view URL]: Login failed for user 'novaecorp1'. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SqlException (0x80131904): Login failed for user 'novaecorp1'.] [login to view URL](SqlException exception, Boolean breakConnection) +4869827 [login to view URL](TdsParserStateObject stateObj) +194 [login to view URL](RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +2392 [login to view URL](Boolean enlistOK) +35 [login to view URL](ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +144 [login to view URL](String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +367 [login to view URL](SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +221 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +189 [login to view URL](DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +185 [login to view URL](DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +31 [login to view URL](DbConnection owningObject) +433 [login to view URL](DbConnection owningObject) +66 [login to view URL](DbConnection owningObject) +499 [login to view URL](DbConnection owningConnection) +65 [login to view URL](DbConnection outerConnection, DbConnectionFactory connectionFactory) +117 [login to view URL]() +122 [login to view URL]() in [login to view URL] NopSolutions.NopCommerce.Web.Modules.electronicheadermenu.Page_Load(Object sender, EventArgs e) in [login to view URL] [login to view URL](IntPtr fp, Object o, Object t, EventArgs e) +14 [login to view URL](Object sender, EventArgs e) +35 [login to view URL](EventArgs e) +99 [login to view URL]() +50 [login to view URL]() +141 [login to view URL]() +141