Dell DL4300 Owner's Manual page 40

Option Description
TPM Command
Clears all the contents of the TPM. The TPM Clear option is set to No by default.
Intel TXT Enables or disables the Intel Trusted Execution Technology (TXT) option. To enable
the Intel TXT option, virtualization technology and TPM Security must be enabled
with Pre-boot measurements. This option is set to Off by default.
Power Button Enables or disables the power button on the front of the system. This option is set
to Enabled by default.
NMI Button Enables or disables the NMI button on the front of the system. This option is set to
Disabled by default.
AC Power Sets how the system behaves after AC power is restored to the system. This option
Recovery is set to Last by default.
AC Power Sets the time delay for the system to power up after AC power is restored to the
Recovery Delay system. This option is set to Immediate by default.
User Defined Sets the User Defined Delay option when the User Defined option for AC Power
Delay (60s to Recovery Delay is selected.
240s)
UEFI Variable Provides varying degrees of securing UEFI variables. When set to Standard (the
Access default), UEFI variables are accessible in the operating system per the UEFI
specification. When set to Controlled, selected UEFI variables are protected in the
environment and new UEFI boot entries are forced to be at the end of the current
boot order.
Secure Boot Enables Secure Boot, where the BIOS authenticates each pre-boot image by using
the certificates in the Secure Boot Policy. Secure Boot is disabled by default.
Secure Boot When Secure Boot policy is set to Standard, the BIOS uses the system
Policy manufacturer's key and certificates to authenticate pre-boot images. When Secure
Boot policy is set to Custom, the BIOS uses the user-defined key and certificates.
Secure Boot policy is set to Standard by default.
Secure Boot Specifies the list of certificates and hashes that secure boot uses to authenticate
Policy Summary images.
Creating a system and setup password
Prerequisites
Ensure that the password jumper is enabled. The password jumper enables or disables the system
password and setup password features. For more information, see the System board jumper settings
section.
NOTE: If the password jumper setting is disabled, the existing system password and setup password
are deleted and you need not provide the system password to boot the system.
Steps
1. To enter System Setup, press F2 immediately after turning on or rebooting your system.
2. On the System Setup Main Menu screen, click System BIOS → System Security.
3. On the System Security screen, verify that Password Status is set to Unlocked.
4. In the System Password field, type your system password, and press Enter or Tab.
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CAUTION: Clearing the TPM results in the loss of all keys in the TPM. The
loss of TPM keys may affect booting to the operating system.