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POST error indicators
When POST detects a system failure, it displays a POST error message.
Recoverable POST errors
Whenever a non-fatal error occurs during POST, an error message describing the problem appears onscreen.
These error messages are displayed in normal video (white text on black background), and show the details of
the error. The following is an example of a POST error message:
018 – CMOS Date/Time not set
Table -3 lists the most common POST error messages with corresponding troubleshooting recommendation. HP
recommends that you correct the error, even if the server appears to boot successfully.
Table -3 POST Error Messages
Error code Error Message Description/Corrective Action
000 Timer Error Indicates an error while programming the count register of
channel 2 of the 8254 timer. This may indicate a problem with
system hardware. Requires repair of the system board.
003 CMOS Battery Low CMOS Battery is low. This message usually indicates that the
CMOS battery needs to be replaced. It could also appear when
the users intentionally discharge the CMOS battery.
004 CMOS setting Wrong CMOS settings are invalid. This error can be resolved by using
F9 to load optimal default in the Setup Utility.
005 CMOS Checksum Bad CMOS contents failed the Checksum check. Indicates that the
CMOS data has been changed by a program other than the
BIOS or that the CMOS is not retaining its data due to
malfunction. This error can be resolved by using F9 to load
optimal default in the Setup Utility.
008 Unlock keyboard PS2 keyboard is locked. Users need to unlock the keyboard to
continue the BIOS POST.
009 PS2 Keyboard not found Keyboard not working. Verify that the keyboard cable is securely
connected to the keyboard port (not the mouse port) on the rear
panel of the server. If the problem persists, replace the keyboard
or contact your HP Customer Support provider.
018 CMOS Date/Time not Set The CMOS Date and/or Time are invalid. This error can be
resolved by readjusting the system time in the Setup Utility.
019 Ps2 mouse not found Mouse not working. Verify the mouse cable is securely connected
to the mouse port (not the keyboard port) on the rear panel of the
server. If the problem persists, replace the mouse or contact your
HP Customer Support provider.
048 Password check failed Password is incorrect after retried a few times. Users might need
to reset the password.
04c Keyboard/Interface Error Keyboard controller failed test. This may indicate a problem with
system hardware.
04D Primary Master Hard Disk Error The IDE/ATAPI device configured as Primary Master could not
be properly initialized by the BIOS. This message is typically
displayed when the BIOS is trying to detect and configure
IDE/ATAPI devices in POST
04E Primary Slave Hard Disk Error The IDE/ATAPI device configured as Primary Slave could not be
properly initialized by the BIOS. This message is typically
displayed when the BIOS is trying to detect and configure
IDE/ATAPI devices in POST.
4F Secondary Master Hard Disk Error The IDE/ATAPI device configured as Secondary Master could not
be properly initialized by the BIOS. This message is typically
displayed when the BIOS is trying to detect and configure
IDE/ATAPI devices in POST.
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