Abit SI-2PS User Manual page 47

BIOS Setup 3-21
[Cleared]: Clear the warning message when the case-opening situation is detected.
Warning Beep
This option controls the onboard buzzer to beep when the case-opening situation is
detected.
BIOS Protect Control
This option protects the BIOS contents from accidentally writing attempt.
NOTE: Make sure to set this item to "Non-Protected" when flashing the BIOS.
User's Manual