Dell Precision M6500 (Late 2009) - Manual (Page 21)

Sensor based on the amount of light in the surroundings.
LCD
Brightness
This option (represented by a slider bar for On Battery and On AC) sets the panel brightness when the
ambient light sensor is off.
Security
Option
Description
Admin
Password
This field lets you set, change, or delete the administrator password. The administrator password enables
several security features when set including:
Restricts changes to the settings in Setup.
Restricts the boot devices listed in the <F12> Boot Menu to those enabled in the Boot Sequence
field.
Prohibits changes to the owner and asset tags.
Substitutes for the system password if the system prompts for a password during power on.
Successful changes to this password take effect immediately.
If you delete the admin password, the system password is also deleted. Also, the admin password can be
used to delete the hard drive password. For this reason, you cannot set an admin password if a system
password or hard drive is already set. The admin password must be set first if used in conjunction with a
system and/or hard drive password.
System
Password
This field lets you set, change, or delete the system password.
Internal
hard drive
PW
This field lets you set, change, or delete the password on the system's internal hard drive. Successful
changes take place immediately and require a system restart. The hard drive password travels with the
hard drive, so the hard drive is protected even when installed in another system.
Password
Bypass
This option lets you bypass the system and internal hard drive password prompts during a system restart or
when resuming from a standby state. Settings are Disabled, Reboot Bypass, Resume Bypass, and
Reboot & Resume Bypass.
The system will always prompt for the set system and internal hard drive password when powered on from
an off state (cold boot).
Default setting: Disabled
Password
Change
This option lets you determine whether changes to the System and hard drive passwords are permitted
when an Admin password is set. Use the check box to allow or disallow changes.
Default setting: Allow Non-Admin Password Changes
TPM Security
This option lets you control whether the Trusted Platform Module (TPM) in the system is enabled and visible
to the operating system. When disabled (check box is empty), the BIOS will not turn on the TPM during
POST. The TPM will be non-functional and invisible to the operating system. When enabled (check box
filled) the BIOS will turn the TPM on during POST so the it can be used by the operating system.
Disabling this option does not change any settings you may have made to the TPM, nor does it delete or
change any information or keys you may have stored there. It simply turns off the TPM so that it cannot be
used. When you re-enable the TPM, it will function exactly as it did before it was disabled.
Once TPM is enabled (check box filled), the available settings are Deactivate, Activate, and Clear.
With the TPM in Deactivate mode, it will not execute any commands that use the resources of the TPM, nor
will it allow any access to stored owner information.
The Clear setting allows the owner's information stored in the TPM to be cleared. Use this to restore the
TPM to its default state if you lose or forget the owner authentication data.
Computrace®
This field lets you activate or disable the BIOS module interface of the optional Computrace software. The
settings are Deactivate, Disable, and Activate.
The Activate and Disable options will permanently activate or disable the feature and no further changes will
be allowed.
CPU XD
Support
This field enables or disables the Execute Disable mode of the processor. Use the check box to enable /
disable this feature.
Default setting: Enabled