Unable to login into wp-admin

Solution:

First open your blog then Go to the wp-config.php

• That’s all, stop editing! Happy blogging. */ After this line write define(‘RELOCATE’,true);

then you will be able to login into the blog after that you change the blog url may be you have missed http:// or www or some problem in url the save it then again go the wp-config.php

and comment the line define(‘RELOCATE’,true);

That’ all you have done