When you open the computer case, a switch is tripped and after the case has been closed and the computer boots up, you get this chassis intruded message.
To clear this message go to the BIOS configuration and then to the chassis intruder detect and then Reset this setting.
SOURCE: "the system intruded chassis opnened
The NRL_LS has a connector for a microswitch on the case, to detect if the case is opened.
Look for jumper J2, between the battery and the bios chip, at one end of a long connector CON1.
There should be 2 adjacent bare pins at one end of J2.
Place a jumper block on them, and the system should start normally.
The manual is here +NRL-LS Cover.P65 - ftp.asus.com.tw
Look at item 9 on page 2-22, referring to jumper J2
SOURCE: ASUS P4S533-E. Question : The
Some computer-cases have a small switch that is "triggered" when somebody removes a side-panel. The trigger sets a flag on the motherboard, to say "intrusion", i.e., somebody opened the case, possibly removed something (RAM, video-card), or cut some wires.
You need to inspect the computer, to see if the "intruder" did anything to your computer.
Then, you can enter BIOS SETUP mode, and "clear" that flag.
Optionally, you can then "disable" that "chassis intrusion" programming.
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