Ani tu hlášku se nepodařilo opsat:)
http://en.community.dell.com/support-forums/deskto p/f/3514/t/4937364To reset the chassis intrusion detector, enter System Setup (BIOS settings), select System Security, and reset Chassis Intrusion to Enabled or Enabled-Silent.
http://googledoll.blogspot.cz/2009/05/stopping-cov er-was-previously-removed.html