3
Troubleshooting
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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Содержание Vostro V 3900
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