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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.
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.
5. Remove the computer cover.
6. Remove the floppy drive.
7. Remove any cards that are installed.
8. Disconnect all cables from the system board.
9. Lift up the heat-sink shroud.
10. Remove the microprocessor heat sink.
11. Remove the 12 screws that secure the system board to the computer frame.
Four of the 12 screws that secure the system board to the computer frame also secure the heat-sink base to the system board.
12. Lift the system board out from the computer.
13. Place the system board that you just removed next to the replacement system board.
Visually compare the replacement system board to the existing system board to ensure that you have the correct part.
Installing the System Board
1. Transfer components from the existing system board to the replacement system board:
a. Remove the memory modules and install them on the replacement board.
b. Remove the microprocessor package from the existing system board and transfer it to the replacement system board.
2. Configure the settings of the replacement system board.
Set the jumpers on the replacement system board so that they are identical to the ones on the existing board.
3. Place the system board inside the computer frame, place the heat-sink base on the system board, and then replace the screws that you removed in
step11 of the preceding procedure.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the 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.
CAUTION: The microprocessor heat sink can get hot. To avoid burns, ensure that the heat sink has had sufficient time to cool before you touch it.
CAUTION: The microprocessor package can get hot. To avoid burns, ensure that the package has had sufficient time to cool before you touch it.