Javascript not working in admin

Script concatenation in admin area is normal behavior, but I am not sure that trying to load that many scripts is.

You can disable concatenation by defining CONCATENATE_SCRIPTS constant to false. In wp-config.php would be fitting:

define('CONCATENATE_SCRIPTS', false);

See Disable_Javascript_Concatenation in Codex.

W3TC shouldn’t affect anything on admin side.

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