What has occurred if you see the message, "Chassis Intruded! System has halted." the next time you start your computer?

The case has been opened.

Explanation:

Chassis Intruded! Fatal Error ... System halted:

Due to some technical hardware issue this problem arises. most of the situations, you need to put the jumper back on the motherboard with the pin labeled chassis signal and ground.

how to get rid of this problem:

To avoid this problem you need to disable Chassis intrusion feature completely to get rid of this error message.