Dell OptiPlex 5040 Small Form Factor User Manual

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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
Table 1. Diagnostic power LED codes
Power LED light status Possible cause Troubleshooting steps
Off The computer is either
turned off or is not
receiving power or in
Hibernation mode.
• 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 that 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 that
the computer turns
on properly.
• Ensure the electrical
outlet is working by
testing it with
another device, such
as a lamp.
Steady/blinking amber Computer fails to
complete POST or
processor failure.
• Remove and reinstall
any cards.
• Remove and reinstall
the graphics card, if
applicable.
• Ensure the power
cable is connected
to the system board
and processor.
Slow Blinking white light Computer is in sleep
mode.
• Press the power
button to bring the
computer out of the
sleep mode.
• Ensure all power
cables are securely
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Dell OptiPlex 5040 Small Form Factor Specifications

General

Brand	Dell
Model	OptiPlex 5040 Small Form Factor
Category	Desktop
Language	English