HP 電腦出912－The computer has been removed.

今日去整機，有部HP電腦開機時出現以下message：
912－The computer has been removed.
The machine Cover has been removed Sine last system start up. Please ensure that any system access was authorized.
應該是有人曾經開過機箱。重複開幾次機都Beep Beep Beep叫幾聲，於是入F10搵，去hardware monitor setup入面reset Enable便ok了。