wp-admin shows blank page, how to fix it?

Question

I am working with WordPress 3.5.8. Yesterday I made some changes into it to a friend. I don\'t know what happened, but after some time when I try to log in at wp-admin side and

Answer 1

It might be because of a few reasons:

1. Problems in your web host.
2. Theme related errors(You can change it by renaming theme folder).
3. Plugin related errors(You can change it by renaming plugin folder).
4. An Empty line in your wp-config file.

5. Code errors that can be seen by enabling Debug mode.

   "define('WP_DEBUG', true); // Enable Debug logging to the /wp-content/debug.log file define( 'WP_DEBUG_LOG', true );

   // Disable display of errors and warnings define( 'WP_DEBUG_DISPLAY', false ); @ini_set( 'display_errors', 0 );"

6. Remove blank space in functions.php or you can also remove the last "?>"