29 TroubleshootingList of Error CodesWhen turning on the computer, if one of the following error codes or messages is displayed, follow the instructions shown below.If the problem persists, or if the error code or message displayed is not shown here, contact your technical support office ( page50).Error Code/Message0211: Keyboard error0251: System CMOS checksumbad - Default configurationused0271: Check date and time set-tings0280: Previous boot incomplete- Default configuration usedPress to SetupOperating System not foundExtended RAM Module FailedActionIf an external keyboard or mouse is connected, disconnect these devices.An error has occurred in the memory that stores the Setup Utility settings. This error occurswhen the memory content is changed through some inadvertent operation by a program orother function.Run the Setup Utility and load the default values, then change the settings to the appropri-ate values as needed.If the problem persists, the internal clock battery may need to be replaced. Contact yourtechnical support office.The date and time setting are incorrect.Run the Setup Utility and set the date and time correctly.If the problem persists, the internal clock battery may need to be replaced. Contact yourtechnical support office.Startup has failed repeatedly, so the Setup Utility settings have been returned to their defaultvalues, and the computer has been booted.Run the Setup Utility and load the default values, then change the settings to the appropri-ate values as needed.Write down the error details and press F2 to run the Setup Utility. Confirm the settings,and change the settings to the appropriate values as needed.The OS is not properly installed on the floppy disk or the hard disk that you are trying to bootfrom.If the computer cannot be booted from the floppy disk, check the floppy disk drive toensure that the disk is in fact bootable, and change it to another if not.If the computer cannot be booted from the hard disk, confirm whether the hard disk isproperly recognized in [Information] menu of the Setup Utility.• If the hard disk is recognized, perform the reinstallation procedure.• If not, contact your technical support office.If a device is connected to the USB port, disconnect the device, or run the Setup Utilityand set [Legacy USB Support] in [Advanced] menu to [Disable].If the RAM module has not been inserted properly, or if a RAM module other than onematching the specifications has been inserted, a beep will sound and the message “Ex-tended RAM Module Failed” will be displayed when turning the power on. In this case,turn the power off, confirm that the RAM module meets the specifications, and reinsert it.How to run the Setup Utility1 Restart the computer.2 Press F2 while [Panasonic] boot screen is displayed soon after the computer begins the startup procedure.
