From a Fresh install of CiviCRM on drupal 7 I logged out of the system and logged In again into drupal, on Accessing the CiviCRM module on drupal it leads me to a blank page http://localhost/drupal/?q=civicrm/dashboard and also http://localhost/drupal/?q=civicrm/admin.
did you check if all permissions are OK and there is a civicrm_settings.php on /sites/default? Is there any message in the Drupal log (reports/recent log messages)?
When experiencing a WSOD you can usually find a clue as to what may have happened in the PHP log file.
Where that file lives depends on your setup: /var/log/httpd/error_log or eg /var/log/apache2 or eg /Applications/MAMP/logs