Troubleshooting Tools 123Diagnostic Light Codes During POSTThe power light displays a solid green for diagnostic light codes during POST.(blinking)amber A possible systemboard failure hasoccurred.Contact Dell for technicalassistance (see "ContactingDell" on page 295).(blinking)amber A possible systemboard failure hasoccurred.Contact Dell for technicalassistance (see "ContactingDell" on page 295).(blinking)amber A possible systemboard failure hasoccurred.Contact Dell for technicalassistance (see "ContactingDell" on page 295).(blinking)amber A possible systemboard failure hasoccurred.Contact Dell for technicalassistance (see "ContactingDell" on page 295).(blinking)amber A processor mismatchexists.See "Troubleshooting" onpage 107 and then to"Processor" on page 179.(blinking)amber Power supply cablesare not properlyconnected.Verify that both powersupply cables are pluggedin to the motherboard.Light Pattern Problem Description Suggested ResolutionA possible processor failure hasoccurred.Reinstall the processor (see"Processor" on page 179)and restart the computer.Diagnostic Lights PowerLightProblem Description Suggested Resolution