Dell XPS 420 (Late 2007) - Manual (Page 159)

Removing and Installing Parts
159
6 Replace the processor airflow shroud (see "Installing the Processor Airflow
Shroud Assembly" on page 149) and the Processor Fan assembly (see
"Installing the Processor Fan Cage" on page 150 and "Installing the
Processor Fan" on page 152).
7 Replace the card fan assembly (see "Installing the Card Fan" on page 154).
8 Replace any additional components that you removed from the system
board.
9 Reconnect all cables to the system board.
10 Replace the computer cover (see "Replacing the Computer Cover" on
page 172).
NOTICE:
To connect a network cable, first plug the cable into the network port or
device and then plug it into your computer.
11 Connect your computer and devices to electrical outlets, and then turn
them on.
12 Flash the system BIOS, as needed.
NOTE:
For information on flashing the system BIOS, see support.dell.com.
book.book Page 159 Tuesday, November 27, 2007 10:29 AM