Dell Inspiron 9400 Service Manual page 51

1. Replace in reverse order all of the components removed in
NOTICE: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in
damage to the computer.
2. Turn on the computer.
NOTE: If you use a BIOS update program CD to flash the BIOS, press <F12> before inserting the CD so that you can set up the computer to boot from a
CD this one time only. Otherwise, you must enter the system setup program to change the default boot order.
3. Insert the flash BIOS update program CD that accompanied the replacement system board into the optical drive. Follow the instructions that appear on
the screen. See Flashing the BIOS
4. Enter the system setup program to update the BIOS on the new system board with the computer Service Tag.
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Removing the System
for further information.
Board.