Dell Precision T5400 (Late 2007) - Manual (Page 97)

System Setup 97
Boot Menu
This feature allows you to change the boot sequence for devices.
Fast Boot
(On default) When enabled, this feature reduces computer startup time by
bypassing some compatibility steps. Off does not skip any
steps during computer startup. On starts the system more
quickly.
Numlock Key
(On default) Determines the functionality of the numeric keys on the right
side of your keyboard. Off commands the right keypad keys to
function as arrows. On commands the right keypad keys to
function as numbers.
OS Install
(Off
default) Determines the maximum amount of system memory
available to the operating system. When set to Off, all system
memory is available to the operating system. When set to On,
the maximum amount of memory available to the operating
system is 256 MB.
NOTE: Some operating systems will not complete installation
with more than 2 GB of system memory.
POST Hotkeys Determines whether the sign-on screen displays a message
stating the keystroke sequence that is required to enter the
Setup program or the Quickboot feature. Setup & Boot
Menu displays both messages
(F2=Setup and F12=Boot Menu). Setup displays the setup
message only (F2=Setup). Boot Menu displays the Quickboot
message only (F12=Boot Menu). None displays no message.
Keyboard
Errors When set to Report (enabled) and an error is detected during
POST, the BIOS will display the error message and prompt
you to press to continue or press to enter the
system setup program.
When set to Do Not Report (disabled) and an error is
detected during POST, the BIOS will display the error
message and continue booting the system.