Replacing the System Board 263
Replacing the System Board
Removing the System Board: Mini Tower, Desktop, and
Small Form Factor Computers
1
Shut down the computer through the Start menu.
2
Ensure that your computer and attached devices are turned off. If your computer and attached
devices did not automatically turn off when you shut down your computer, turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it
from the network wall jack.
3
Disconnect any telephone or telecommunication lines from the computer.
4
Disconnect your computer and all attached devices from their electrical outlets, and then press
the power button to ground the system board.
CAUTION: To guard against the electrical shock, always unplug your computer from the electrical
outlet before removing the cover.
5
Remove the computer cover:
• Remove the mini tower computer cover.
• Remove the desktop computer cover.
• Remove the small form factor computer cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted
metal surface, such as the metal at the back of the computer. While you work, periodically touch an
unpainted metal surface to dissipate any static electricity that could harm internal components.
6
Remove any components that restrict access to the system board (CD/DVD drive(s), floppy
drive, hard drive, I/O panel (except for small form factor computer).
7
Remove the processor and heat sink assembly:
• Remove the mini tower processor and heat sink assembly.
• Remove the desktop processor and heat sink assembly.
• Remove the small form factor processor and heat sink assembly.
8
Disconnect all cables from the system board.
9
Remove the screws from the system board. See the illustrations below for screw locations:
•See "Mini Tower System Board Screws" for an illustration of the screw locations.
•See "Desktop System Board Screws" for an illustration of the screw locations.
•See "Small Form Factor System Board Screws" for an illustration of the screw locations.
10
Slide the system board assembly toward the front of the computer, and then lift the board up and
away.
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