77 Chapter 4Index of Error MessagesError Message ListError Messages FRU/Action in SequenceStruck Key See “Keyboard or Auxiliary Input Device Check“.System CMOS checksum bad -Default configuration usedRTC batteryRun BIOS Setup Utility to reconfigure system, thenreboot system.Real time clock error RTC batteryRun BIOS Setup Utility to reconfigure system time, thenreboot system.Main boardPrevious boot incomplete - Defaultconfiguration used“Load Default Settings” in BIOS Setup Utility.RTC batteryMain boardInvalid System Configuration Data “Load Default Settings” in BIOS Setup Utility.Main boardOperating system not found Enter Setup and see if fixed disk and drive A areproperly identified.Diskette driveHard disk driveMain boardPower-on indicator turns off and LCDis blank.Power source (battery pack and power adapter.) See“Power System Check“.Ensure every connector is connected tightly andcorrectly.Reconnect the DIMM.Main board.Power-on indicator turns on and LCDis blank.Power source (battery pack and power adapter.) See“Power System Check“.Reconnect the LCD connectorHard disk driveLCD cableLCD inverterLCDMain boardPower-on indicator turns on and LCDis blank. But you can see POST on anexternal CRT.Reconnect the LCD connectors.LCD cableLCD inverterLCDMain boardPower-on indicator turns on and ablinking cursor shown on LCD duringPOST.Ensure every connector is connected tightly andcorrectly.Main board