3Troubleshooting Your ComputerYou can troubleshoot your computer using indicators like Diagnostic Lights, Beep Codes, and ErrorMessages during the operation of the computer.Diagnostic Power LED CodesPower LED Light Status Possible Cause Troubleshooting StepsOff The computer is either turned offor is not receiving power.• Re-seat the power cable inthe power connector on theback of the computer and theelectrical outlet.• If the computer is pluggedinto a power strip, ensure thepower strip is plugged into anelectrical outlet and is turnedon. Also, bypass powerprotection devices, powerstrips, and power extensioncables to verify the computerturns on properly.• Ensure the electrical outlet isworking by testing it withanother device, such as alamp.Blinking Amber Computer fails to completePOST or processor failure.• Remove and then reinstall anycards.• Remove and then reinstall thegraphics card, if applicable.• Ensure the power cable isconnected to themotherboard and processor.Steady Amber Computer is in standby or this isa computer fault error condition,including the power supply. Onlythe +5VSB rail on the powersupply is working correctly.• Press the power button tobring the computer out ofstandby mode.• Ensure all power cables aresecurely connected to thesystem board.• Ensure the main power cableand front panel cable aresecurely connected to thesystem board.Steady White The computer is fully functionaland in the On state.If the computer is notresponding, do the following:• Ensure the display isconnected and turned on.64