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a. Locate the
Clear Password and Clear CMOS jumpers
b. Remove the password jumper from its pins.
c. Place the password jumper on the Clear CMOS pins and wait approximately 5 seconds.
d. Remove the jumper from the Clear CMOS pins and place the jumper back on the password pins.
7. Replace the computer cover.
NOTICE:
To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
8. Connect your computer and devices to electrical outlets, and turn them on.
Replacing the System Board
CAUTION:
Before you perform this procedure, see the safety instructions in your Setup and Quick Reference Guide.
NOTICE:
To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such
as the back panel) on the computer.
NOTICE:
Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the
system board has turned off. To locate the light, see
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 electrical shock, always unplug your computer from the electrical outlet before opening the cover.
5. Remove the 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.
Removing the System Board
1. If a floppy drive is installed, remove the floppy drive.
2. Remove any installed cards.
3. Disconnect all cables from the system board.
4. Disconnect the fan power cable from the connector on the system board.
5. Remove the shroud/fan assembly.
CAUTION:
The processor heat sink can get hot. To avoid burns, ensure that the heat sink has had sufficient time to cool before you touch it.
6. Remove the processor heat sink.
7. 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.
on the system board.
"System Board
Components."
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