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Post beep codes – HP ProLiant DL140 G3 Server User Manual

Page 23

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System BIOS configuration 23


Table 18 POST error messages

Error code

Error message

Description/corrective action

0251

System CMOS checksum bad - Default
configuration used

The settings in the Setup Utility have been corrupted or modified
incorrectly, perhaps by an application program that changes data
stored in CMOS.
You can either load the system default values or access Setup and
enter your own custom values. If the error persists, check the system
battery or contact your HP Customer Support provider. If the error
persists, check the system battery or contact your HP Customer
Support provider.

0260

System timer error

The timer test failed. Requires repair of the system board.

0270

Real time clock error

Real-Time Clock (RTC) fails BIOS hardware test. May require board
repair.

0271

Check date and time settings

BIOS found date or time out of range and reset the RTC. May
require setting legal date (1991-2099).
Access Setup and check the values in the System Time and System
Date fields of the Main

menu.

0280

Previous boot incomplete – Default
configuration used

Initial bootup failed. BIOS automatically loads the default system
values, then boots again.

0281

Memory size found by POST differed
from CMOS

The user added or removed a memory module, thus the system
memory size is different from the previous bootup value.

02F5

DMA test failed

The DMA control test failed.

02F6

Software NMI failed

An NMI signal is detected and/or user has pressed the NMI switch.

POST beep codes

There are several POST routines that issue a POST terminal error and shut down the system if they fail. Before

shutting down the system, the terminal-error handler issues a beep code signifying the test point error, writes the

error to port 80h, attempts to initialize the video, and writes the error in the upper left corner of the screen (using

both mono and color adapters).
The POST routines cannot display messages when an error occurs if any of the following are present.

The error occurs before the video display is initialized.

The video configuration fails, either there’s no graphics card installed or the one installed is faulty.

An external ROM module does not properly checksum to zero.

The system memory cannot be initialized.

During these instances the server unit emits a buzzing sound followed by a series of audible beeps. An external

ROM module (e.g. VGA) can also issue audible errors, usually consisting of one long tone followed by a series

of short tones. If you get a blank screen on boot, but hear beeps, count the beeps and refer to the following table

for their corresponding meaning. If you miss the beep code:
1.

Turn off the server by pressing the power button for five seconds or more.

2.

Restart the server by pressing the power button.

3.

Listen for the signal again.

The routine derives the beep code from the test point error as follows:
1.

The 8-bit error code is broken down to four 2-bit groups (Discard the most significant group if it is 00).

2.

Each group is made one-based (1 through 4) by adding 1.

3.

Short beeps are generated for the number in each group.
Example:
Test point 01Ah = 00 01 10 10 = 1-2-3-3 beeps