DELL DCDO Manuale Utente

Quick Reference Guide

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If the power light is off, the computer is either turned off or is not 
receiving power.

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Reseat the power cable into both the power connector on the back of 
the computer and the electrical outlet.

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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.

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

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

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Ensure that the main power cable and front panel cable are securely 
connected to the system board (see "System Board Components" in 
your User’s Guide).

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If the power light is blinking amber, the computer is receiving electrical 
power, but an internal power problem might exist.

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Ensure that the voltage selection switch is set to match the AC power 
at your location, if applicable.

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Ensure that the processor power cable is securely connected to the 
system board (see "System Board Components" in your User’s Guide).

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If the power light is steady amber, a device may be malfunctioning or 
incorrectly installed.

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Remove and then reinstall the memory modules (see "Removing the 
Front Panel" in your User’s Guide).

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Remove and then reinstall any cards (see "Cards" in your User’s Guide).

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Eliminate interference. Some possible causes of interference are:

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Power, keyboard, and mouse extension cables

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Too many devices on a power strip

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Multiple power strips connected to the same electrical outlet