There are several reasons why your wordpress blog displays nothing but a blank white page. I am only however going to go through the two common causes:
1) So you’ve attempted to upgrade your blog and in turn you get a blank white page. Check for the following:
- Safe Mode is turned Off
- Check to see if wordpress is waiting for you to finalize your upgrade by going to admin panel and then finalizing your upgrade.
- See if you have enough PHP memory to run the installation, upgrades typically require 18-20MB, your webhost may have this set to a lower value for performance optimization purposes.
2) So you’ve enabled a plugin and your blog now displays a blank page. Check the following:
- Safe Mode is turned Off
- See if you have enough PHP memory to run the plugin, plugin memory requirements vary depending on the plugin
If you are unable to remedy the problem with the solutions above, then I would suggest looking into the error logs to determine the root cause of the problem. You may or may not have access to this.
