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74 Solving Problems
Power Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
IF THE POWER LIGHT IS OFF — The computer is either turned off or is not
receiving power.
• Reseat the power cable into both 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 that the power strip is turned on. Also bypass
power protection devices, power strips, and power extension cables to verify that
the computer turns on properly.
• Ensure that the electrical outlet is working by testing it with another device, such
as a lamp.
IF THE POWER LIGHT IS STEADY BLUE AND THE COMPUTER IS NOT
RESPONDING — See "Power Lights" on page 81.
IF THE POWER LIGHT IS BLINKING BLUE — The computer is in standby mode.
Press a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
IF THE POWER LIGHT IS STEADY AMBER — Power problem or internal device
malfunction.
• Ensure that the 12-volt power connector (12V) is securely connected to the system
board (see "System Board Components" on page 106).
• Ensure that the main power cable and front panel cable are securely connected to
the system board (see "System Board Components" on page 106).
IF THE POWER LIGHT IS BLINKING AMBER — The computer is receiving electrical
power, a device might be malfunctioning or incorrectly installed.
• Remove and then reinstall the memory modules (see "Memory" on page 111).
• Remove and then reinstall any cards (see "Cards" on page 115).
• Remove and then reinstall the graphics card, if applicable (see "Removing a
PCI/PCI Express Card" on page 121).
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