So, you visit your WordPress blog and all you get is a blank white screen. You can’t log into WordPress either. This is when you freak the *$!@ out.
Don’t panic! It may look like your blog has been deleted, but all the data is probably still there. The White Screen of Death usually appears when you have a problem with a theme or plugin. To fix the problem, you need to log into your server and rename the folder that contains the malfunctioning theme or plugin. This is a process of trial and error, so keep renaming folders and refreshing the blog to see if it’s fixed.
Once your blog is back, try renaming the folder to its original name. Usually whatever was wrong will have righted itself. If not, delete the plugin (after backing it up) and try reinstalling it with the latest version.
The White Screen of Death always terrifies people, but it’s one of the easiest WordPress problems to fix. Clients are never more grateful than when I magically recover their blogs this way. By far, it has the biggest reward to work ratio of any problem I solve.