DELL 3800 ユーザーズマニュアル

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Troubleshooting Your Computer

You can troubleshoot your computer using indicators like Diagnostic Lights, Beep Codes, and Error 
Messages during the operation of the computer.

Diagnostic Power LED Codes

Power LED Light Status

Possible Cause

Troubleshooting Steps

Off

The computer is either turned off 
or is not receiving power.

• Re-seat the power cable in 

the power connector on the 

back of the computer and the 

electrical outlet.

• If the computer is plugged 

into a power strip, ensure the 

power strip is plugged into an 

electrical outlet and is turned 

on. Also, bypass power 

protection devices, power 

strips, and power extension 

cables to verify the computer 

turns on properly.

• Ensure the electrical outlet is 

working by testing it with 

another device, such as a 

lamp.

Blinking Amber

Computer fails to complete 
POST or processor failure.

• Remove and then reinstall any 

cards.

• Remove and then reinstall the 

graphics card, if applicable.

• Ensure the power cable is 

connected to the 

motherboard and processor.

Steady Amber

Computer is in standby or this is 
a computer fault error condition, 
including the power supply. Only 
the +5VSB rail on the power 
supply is working correctly.

• Press the power button to 

bring the computer out of 

standby mode.

• Ensure all power cables are 

securely connected to the 

system board.

• Ensure the main power cable 

and front panel cable are 

securely connected to the 

system board.

Steady White

The computer is fully functional 
and in the On state.

If the computer is not 
responding, do the following:
• Ensure the display is 

connected and turned on.

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