framework/system/libraries/drivers/Database/Mysqli.php error

This is the error i receive when I try to access the Backup module. Keep in mind I have changed the default passwords and then, i think reverted them all back. I am currently running 2.6. I searched and searched for this solution but could only find a few posts but none with a solution I could make sense of. Here is the error and I am willing to give whoever $100+ for there solution. If it is of any relevence I could not acssess phpmyadmin until I reverted back to the default passwords. So that is working.

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framework/system/libraries/drivers/Database/Mysqli.php [52]:

mysqli::mysqli() [function.mysqli-mysqli]: (28000/1045): Access denied for user 'asteriskuser'@'localhost' (using password: YES)
Stack Trace

* framework/system/libraries/drivers/Database/Mysqli.php [52]:

mysqli->mysqli( localhost, asteriskuser, amp109, asterisk )

* framework/system/libraries/Database.php [218]:

Database_Mysqli_Driver->connect( )

* framework/system/libraries/Database.php [238]:

Database_Core->connect( )

* maint/modules/backup/controllers/backup.php [18]:

Database_Core->query( show tables like 'backup_item' )

*

Backup_Controller->__construct( )

* framework/system/core/Kohana.php [269]:

ReflectionClass->newInstance( )

*

Kohana::instance( )

* framework/system/core/Event.php [209]:

call_user_func( Array
(
[0] => Kohana
[1] => instance
)
)

* framework/system/core/Bootstrap.php [55]:

Event::run( system.execute )

* kindex.php [122]:

require( framework/system/core/Bootstrap.php )