[COLOR=#363]The hosting provider and the default settings of the webserver are set offline segment error in code to increase security, rather than an error, it is now the code errors majority sections are displayed with white screen, also known as white error page.
White Error 500 Internal Server Error page or tens of thousands of different reasons but all the causes are derived from the setting in the webserver (.htaccess for Apache and Nginx file for .conf) and comes from the code on the website.
Solution
To fix the problem, we need to know the cause, knowing the cause then whether you are a new user or a professional are also self-correction by reading the log files saved in error, in which you will know causes more accurately.
For bug white page
with 100% bug white page comes from your code like calling a function does not exist, the code wrong syntax, write extra spaces, ... so to fix this error, please open the file error log to that view .
This log file format is usually named error_log, error.log or kind as such and will be located in the folder / public_html for Shared Host, also for private server (VPS / Dedicated), you open the domain configuration file your are faulty declaration that will see the log and trace every path that opens up. If you used the Shared Host can not find the log file, please send support to the engineering department so they seek help.
Content log file looks like this:
01 [21-Aug-2014 21:40:17 UTC] PHP Warning: stripslashes () expects parameter 1 to be string, object given in /path/xxx/example.com/public_html/file.php on line XXX
02 [21 -Aug-2014 21:40:17 UTC] PHP Fatal Error: XXX .................................. ...........................
In it, there are two types of errors PHP:
PHP Warning - Warning to the normal level, warnings not affect the website was interrupted and it will be hidden by default. If you set up the wp-config.php file WP_DEBUG in TRUE, it will show off the site Warning
PHP Fatal Error - This is a serious error that PHP can not continue running if encountered, the cause white error page.
The errors in the log file will be declared on each line, each line is a one-time error, ie a visit to that error, it will display one line and can be repeated many times. To read the log, you should read from top to bottom correspond to the arrangement from old to new fault error, or you can base the numerous milestones in the first paragraph line.
Without error_log file, open the wp-config.php file and find:
01 define ( 'WP_DEBUG', false);
Edit and save your false to true.
Good luck![/COLOR]