The BIOS Security Menu deals with system security issues such as passwords, chassis intrusion, and virus protection.
The Supervisor Password screen has one feature: setting up a master password for locking user(s) out of the system BIOS setup screen.
A supervisor password is used in large institutions where BIOS settings are kept standardized by a computer support staff. Once set, BIOS setups are locked with a master password only known to the network administrator or a designee. Password security prevents users from accidentally or experimentally changing the settings and causing system problems requiring support staff intervention. You are not likely to find Supervisor password security outside of large institutions like corporations or large school districts.
Password Security, when enabled, prompts you to enter a password, then enter it again for confirmation. Instructions for Supervisor Password are found in your motherboard manual.
If you accidentally engage Supervisor, bypass it easily by pressing the Enter key without entering a password at the prompt. Following the prompt, the message, "Password Disabled!!!" will appear. Pressing any key will return you to the main setup screen.
The User Password option allows you to install a password that will keep the system from booting unless the proper password is entered. This option also prevents access to the BIOS.
The BIOS password is a nice, basic security feature, but what if the password is forgotten?
The password can be cleared by removing the motherboard’s CMOS battery or by clearing the CMOS with a jumper on the motherboard. The BIOS will not be cleared because it is stored in ROM. The CMOS is actually a small section of the BIOS chip that is cleared with the loss of electricity.
Expansion Card Text
This option enables or disables add-in BIOS cards (i.e. a SCSI/RAID card) to display text on the screen when initializing during system boot.
Chassis Intrusion can be either enabled or disabled. If Chassis Intrusion is enabled and a system's case is opened, this event is logged in the event log and the event is posted on the screen during the next POST. F4 must be pressed in order for POST and booting to continue. This will occur during every POST until Clear Chassis Intrusion Status is selected in the BIOS. Although most cases can be locked, this is a useful tool that can at least report if a case has been accessed by inappropriate persons.
This setting enables Intel's Execute Disable Bit technology, which protects data pages against attacks by malicious worms which attempt to execute large amounts of code that can overwhelm the processor. This option should be set to enable.
You are attempting to enter a system's BIOS, but realize you've forgotten the password. What can you do?
A. Use the generic password of BIOS1234.
B. Contact the motherboard manufacturer for the override password.
C. The password can be found in the operating system's registry.
D. Clear the BIOS by removing the CMOS battery or by using jumpers.
E. Buy a new computer or motherboard. There is no way to access the BIOS unless the password is entered.