72 Solving ProblemsPower ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.IF T H E P O W E R L I G H T I S O F F — The computer is either turned off or is notreceiving power.• Reseat the power cable into both the power connector on the back of the computerand the electrical outlet.• If the computer is plugged into a power strip, ensure that the power strip isplugged into an electrical outlet and that the power strip is turned on. Also bypasspower protection devices, power strips, and power extension cables to verify thatthe computer turns on properly.• Ensure that the electrical outlet is working by testing it with another device, suchas a lamp.IF T H E P O W E R L I G H T I S S T E A D Y B L U E A N D T H E C O M P U T E R I S N O TR E S P O N D I N G — See "Power Lights" on page 79.IF T H E P O W E R L I G H T I S B L I N K I N G B L U E — The computer is in standby mode.Press a key on the keyboard, move the mouse, or press the power button to resumenormal operation.IF T H E P O W E R L I G H T I S S T E A D Y A M B E R — Power problem or internal devicemalfunction.• Ensure that the 12-volt power connector (12V) is securely connected to the systemboard (see "System Board Components" on page 105).• Ensure that the main power cable and front panel cable are securely connected tothe system board (see "System Board Components" on page 105).IF T H E P O W E R L I G H T I S B L I N K I N G A M B E R — The computer is receiving electricalpower, 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 aPCI/PCI Express Card" on page 120).
