Dell Vostro 400 (Mid 2007) - Manual (Page 180)

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Appendix
Changing Boot Sequence for Future Boots
1 Enter system setup (see "Entering System Setup" on page 174).
2 Use the arrow keys to highlight the Boot Sequence menu option and press
to access the menu.
NOTE:
Write down your current boot sequence in case you want to restore it.
3 Press the up- and down-arrow keys to move through the list of devices.
4 Press the spacebar to enable or disable a device (enabled devices have a
checkmark).
5 Press plus (+) or minus (–) to move a selected device up or down the list.
Clearing Forgotten Passwords
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions located in the Product Information Guide.
1 Follow the procedures in "Before You Begin" on page 101.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 103).
3 Locate the 3-pin password connector (PSWD) on the system board.
4 Remove the 2-pin jumper plug from pins 2 and 3 and fix it on pins 1 and 2.