The system board's BIOS chip contains the Service Tag, which is also visible on a barcode label on the base of the computer. The replacement kit for the system board includes media that provide a utility for transferring the Service Tag to the replacement system board.
Removing the System Board Assembly
CAUTION: Before you begin the following procedure, follow the safety instructions that shipped with your computer.
Disconnect the USB daughter-card cable from the system board.
Disconnect the DC-power cable from the system board.
Disconnect the speaker cable from the system board.
Remove any cards or blanks that may be installed in the ExpressCard slot
or the 8-in-1 card slot.
Remove the three M2.5 x 5-mm screws from the system board.
Lift the right edge of the system board, and then carefully lift the system
board out of the computer.
1
ExpressCard slot
2
8-in-1 card slot
3
system board
4
M2.5 x 5-mm system board screws (3)
5
DC-power cable connector
6
USB daughter-card cable connector
7
right side of system board
8
internal card with Bluetooth technology cable connector
9
speaker cable connector
Replacing the System Board Assembly
CAUTION: Before you begin the following procedure, follow the safety instructions that shipped with your computer.
NOTICE: Ensure that any loose cables do not get caught beneath the system board.
NOTE: This procedure assumes that you have completed the removal procedure first.
Insert the left side of the system board into the base of the computer at an
angle until the connectors on the system board are aligned with the holes
on the base of the computer, then carefully lower the system board into
place.
Replace the three M2.5 x 5-mm screws on the system board.
Replace any blanks that you removed from the ExpressCard slot or the 8-
in-1 card slot.
Connect the speaker cable to the connector on the system board.
Connect the DC power cable to the connector on the system board.
Connect the USB daughter-card cable to the connector on the system
board.
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.
Turn on the computer.
NOTE: If you use a BIOS update program media to flash the BIOS, press <F12> before inserting the media in order to set the computer to boot from the media for one time only. Otherwise, you must enter the system setup program to change the default boot order.
Enter the system setup program to update the BIOS on the new system
board with the computer Service Tag. For information on the system setup
program, see the Dell Technology Guide on your computer or at
support.dell.com.