T￿The screws used in the computer are of different thread sizes and lengths; using the wrong screw in an application may damage the unit.

T￿All data stored on a hard drive is lost when the drive is formatted.

Clearing CMOS

✎This procedure does not apply to portable computers.

1.Turn off the computer and any peripheral devices that are connected to it.

2.Disconnect the power cord from the electrical outlet and then from the computer.

CAUTION: The cooling fan is off only when the computer is turned off and the power cable has been disconnected. The cooling fan is always on in all other instances, such as when the computer is “On,” in “Standby,” or “Suspend” mode.

CAUTION: When the computer is connected to an AC power source there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

3.Remove the computer cover.

4.Reset the computer by one of the following methods depending on the model.

T￿If the system board has a CMOS reset button, press the button and then release it to reset the CMOS.

T￿If the system board uses jumpers, remove the E50 jumper from pins 1 and 2 for 60 seconds; then replace the jumper.

Customer Responsibilities

Check the service contract and verify that the customer has taken care of these items: T￿Installing the operating system.

T￿Providing and running all virus check programs.

T￿Running Diagnostics on the hard drive.

T￿Reloading the operating system as required.

T￿Copying over the operating system files as required.

T￿Reformatting the hard drive as required.

1-2 General Service Information