Stopping the 'Cover was previously removed' alert on Dell computers
http://googledoll.blogspot.com/2009/05/stopping-cover-was-previously-removed.html
Symptoms
After you remove and replace the cover on some Dell computers, the following message is displayed at the next system start-up:ALERT! Cover was previously removed.
Cause
Some
Dell computers have a chassis intrusion switch will detects when the
cover has been removed. This acts as a security measure against
hardware tampering.
Resolution-Technicians and Advanced Users ONLY!
To
reset the chassis intrusion detector, enter System Setup (BIOS
settings), select System Security, and reset Chassis Intrusion to
Enabled or Enabled-Silent.
設成disable 最快... 哈..