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IF THE POWER LIGHT IS OFF The computer is either turned off or is not receiving power.

Ensure that the power cable is firmly inserted into both the power connector on the back of the computer and the electrical outlet.

If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power strip is turned on.

Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

Ensure that the voltage selection switch is set to match the AC power at your location (see page 7).

Bypass power protection devices, power strips, and power extension cables to verify that the computer turns on.

Swap the computer and monitor power cables to determine if the power cable is defective.

Ensure that the microprocessor power cable is securely connected to the system board (see page 65).

Ensure that the power supply cables are securely connected to the system board (see page 65).

If the problem persists, contact Dell (see page 84).

IF THE POWER LIGHT IS STEADY AMBER The computer is receiving electrical power, but an internal power problem might exist.

Ensure that the power cable is firmly inserted into both the power connector on the back of the computer and the electrical outlet.

Ensure that the voltage selection switch is set to match the AC power at your location (see page 7).

Ensure that the microprocessor power cable is securely connected to the system board (see page 65).

Ensure that the power supply cables are securely connected to the system board (see page 65).

If the problem persists, contact Dell (see page 84).

IF THE POWER LIGHT IS BLINKING AMBER A device might be malfunctioning or incorrectly installed.

Remove and then reinstall the memory modules (see page 70).

Remove and then reinstall any cards (see page 66).

If the problem persists, contact Dell (see page 84).

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Solving Problems

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Dell 4500S manual W . d e l l . c o m s u p p o r t . d e l l . c o m