Troubleshooting 125
• Bypass power strips, power extension cables, and other power protection devices to
verify that the computer turns on properly.
• Ensure that any power strips being used are plugged into an electrical outlet and are
turned on.
• Ensure that the electrical outlet is working by testing it with another device, such as a
lamp.
• Ensure that the main power cable and front panel cable are securely connected to the
system board (see "System Board Components" on page 150).
IF THE POWER LIGHT IS BLINKING AMBER — The computer is receiving electrical
power, but an internal power problem may exist.
• Ensure that the voltage selection switch is set to match the AC power at your location
(if applicable).
Ensure that all components and cables are properly installed and securely
connected to the system board (see
"System Board Components" on page 150
and "System Board Components" on page 212
).
IF THE POWER LIGHT IS STEADY AMBER — A device may be malfunctioning or
incorrectly installed.
• Ensure that the processor power cable is securely connected to the system board
power connector (POWER2) (see "System Board Components" on page 150).
• Remove and then reinstall all memory modules (see "Memory" on page 155).
• Remove and then reinstall any expansion cards, including graphics cards (see
"Removing a PCI or PCI Express x16 Card" on page 163).
ELIMINATE INTERFERENCE — Some possible causes of interference are:
• Power, keyboard, and mouse extension cables
• Too many devices connected to the same power strip
• Multiple power strips connected to the same electrical outlet
Printer Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
NOTE: If you need technical assistance for your printer, contact the printer’s
manufacturer.
C
HECK THE PRINTER DOCUMENTATION — See the printer documentation for setup
and troubleshooting information.
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