Lenovo computer chassis of the alarm or call the intrusion prevention switch how to set

The host box has a white button, what is the specific function? As shown in figure:

Operation Steps:

1, the boot press F1 into the BIOS, find security---will set Supervison password superuser password;



2, set the Super user name will be more than one for chassics intrusion detection this option defaults to {disabled}, you need to change it to {enable};



Or this interface:



3, after the two settings to save the BIOS settings, normal access to the system, and then shut down the computer, unplug the power cord will be the case cover open after the shutdown, the boot will have information tips error 0176:



Press F1 after entering the super user password into the BIOS in the save BIOS can be normal access to the system, the alarm switch function is set up