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Post-requisites
1 Replace the heat sink.
2 Replace the fan.
3 Replace the solid-state drive.
4 Replace the wireless card.
5 Replace the memory modules.
6 Replace the battery.
7 Replace the base cover.
8 Replace the optical drive (optional).
Entering the Service Tag in the BIOS setup program
1 Turn on or restart your computer.
2 Press F2 when the Dell logo is displayed to enter the BIOS setup program.
3 Navigate to the Main tab and enter the Service Tag in the Service Tag Input eld.
NOTE
: Service tag is the alphanumeric identier located at the back side of your computer.
78 Replacing the system board
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