try:
-deactivating ALL plugins temporarily to narrow down the problem. If the problem goes away, activate them individually (one-by-one) to find the problematic plugin.
If you don’t have access to your admin area, try deactivating plugins manually via FTP or phpMyAdmin.
-switching to the unedited default theme (twenty eleven) for a moment by renaming your current theme’s folder in wp-content/themes. The idea is to force WordPress to fall back to the default theme to rule out any theme-specific issue.
If you don’t have access to your admin area, then access your server via FTP or SFTP or whatever file management application your host provides.
