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Troubleshooting
List of Error Codes
When 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.
Error Code/Message Action
0211: Keyboard error z If an external keyboard is connected, disconnect these devices.
0251: System CMOS checksum
bad - Default configuration used
An error has occurred in the memory that stores the Setup Utility settings. This
error occurs when the memory content is changed through some inadvertent
operation by a program or other function.
z Run the Setup Utility and load the default values, then change the settings to
the appropriate values as needed. (Î page 29)
z If the problem persists, the internal clock battery may need to be replaced.
Contact your technical support office.
0271: Check date and time set-
tings
The date and time setting are incorrect.
z Set the date and time correctly in the [Main] menu of the Setup Utility.
(Î page 31)
z If the problem persists, the internal clock battery may need to be replaced.
Contact your technical support office.
0280: Previous boot incomplete -
Default configuration used
Startup has failed repeatedly, so the Setup Utility settings have been returned to
their default values, and the computer has been booted.
z Run the Setup Utility and load the default values, then change the settings to
the appropriate values as needed. (Î page 29)
Press <F2> to Setup z Write down the error details and press the
F2
key to run the Setup Utility. Con-
firm the settings, and change the settings to the appropriate values as
needed. (Î page 29)
Operating System not found The OS is not properly installed on the floppy disk or the hard disk that you are
trying to boot from.
z If the computer cannot be booted from the floppy disk, check the floppy disk
drive to ensure that the disk is in fact bootable, and change it to another if not.
z If the computer cannot be booted from the hard disk, confirm whether the hard
disk is properly recognized in the [Information] menu of the Setup Utility.
(Î page 31)
• If the hard disk is recognized (“xx GB” is displayed), perform the reinstal-
lation procedure.
• If the hard disk is not recognized (“none” is displayed), contact your
technical support office.
z If a device is connected to the USB port, disconnect the device, or run the
Setup Utility and set [Legacy USB Support] in the [Advanced] menu to [Dis-
able]. (Î page 32)