Здравствуйте! Помогите решить проблему. Почистил комп вот такой программкой jv Power Tools после этого при входе на сайт появляется вот такая ошибка

Warning: Table '.\drupal\users' is marked as crashed and should be repaired query: SELECT u.*, s.* FROM users u INNER JOIN sessions s ON u.uid = s.uid WHERE s.sid = '7eefbc053e7d2c1a3da98a89a704593c' in Z:\home\drupal\www\includes\database.mysqli.inc on line 134

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at Z:\home\drupal\www\includes\database.mysqli.inc:134) in Z:\home\drupal\www\includes\bootstrap.inc on line 1161

Warning: Cannot modify header information - headers already sent by (output started at Z:\home\drupal\www\includes\database.mysqli.inc:134) in Z:\home\drupal\www\includes\bootstrap.inc on line 725

Warning: Cannot modify header information - headers already sent by (output started at Z:\home\drupal\www\includes\database.mysqli.inc:134) in Z:\home\drupal\www\includes\bootstrap.inc on line 726

Warning: Cannot modify header information - headers already sent by (output started at Z:\home\drupal\www\includes\database.mysqli.inc:134) in Z:\home\drupal\www\includes\bootstrap.inc on line 727

Warning: Cannot modify header information - headers already sent by (output started at Z:\home\drupal\www\includes\database.mysqli.inc:134) in Z:\home\drupal\www\includes\bootstrap.inc on line 728

Fatal error: Call to undefined function filter_xss() in Z:\home\drupal\www\includes\common.inc on line 655