150 Troubleshooting
Guide), no network communication is occurring. Replace the network cable.
R
ESTART THE COMPUTER AND LOG ON TO THE NETWORK AGAIN
CHECK YOUR NETWORK SETTINGS — Contact your network administrator or the
person who set up your network to verify your network settings are correct and that the
network is functioning.
R
UN THE HARDWARE TROUBLESHOOTER — See "Hardware Troubleshooter" on
page 135.
Power Problems
WARNING: Before working inside your computer, read the safety information
that shipped with your computer. For additional safety best practices information,
see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
I
F THE POWER LIGHT IS GREEN AND THE COMPUTER IS NOT RESPONDING — See
"Power Lights" on page 123.
I
F THE POWER LIGHT IS BLINKING GREEN — The computer is in standby mode.
Press a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
I
F THE POWER LIGHT IS OFF — The computer is either turned off or is not receiving
power.
• Reseat the power cable in the power connector on the back of the computer and the
electrical outlet.
• Bypass power strips, power extension cables, and other power protection devices to
verify that the computer turns on properly.
• Ensure any power strips being used are plugged into an electrical outlet and are turned
on.
• Ensure the electrical outlet is working by testing it with another device, such as a
lamp.
• Ensure the main power cable and front panel cable are securely connected to the
system board (see "System Board Components" on page 13).
IF THE POWER LIGHT IS BLINKING AMBER — The computer is receiving electrical
power, but an internal power problem may exist.
• Ensure the voltage selection switch is set to match the AC power at your location (if
applicable).
• Ensure all components and cables are properly installed and securely connected to the
system board (see "System Board Components" on page 13).
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