Dell Vostro 1520 - System Setup; Accessing System Setup; Using the F12 Boot Menu

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System Setup
Dell™Vostro™1520ServiceManual
Entering System Setup
<F12> Menu
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Your computer's BIOS, or System Setup program allows you to do the following:
l Access System Setup by pressing <F2>
l Bring up a one-time boot menu by pressing <F12>
Entering System Setup
Press <F2> to enter System Setup and make changes to the user-definable settings. If you are having trouble entering Setup using this key, reboot and press
the <F2> key when the keyboard LEDs first flash.
<F12> Menu
Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the computer. The devices listed on the boot
menu depend on the bootable devices installed in the computer.
l Internal HDD
l CD/DVD/CD-RW Drive
l Onboard NIC
l BIOS Setup
l Diagnostics (starts the Pre-boot System Assessment (PSA) diagnostics)
This menu is useful when attempting to boot to a particular device or to bring up the diagnostics for the computer. Using the boot menu does not make any
changes to the boot order stored in the BIOS.