A

Error Messages and Codes

A.1 Introduction

This appendix lists the error codes and a brief description of the probable cause of the error.

Errors listed in this appendix are applicable only for systems running HP/Compaq BIOS. Not all errors listed in this appendix may be applicable to a particular system model and/or configuration.

A.2 Beep/Power LED Codes

Beep and Power LED indictions listed in Table A-1 apply only to HP-branded models.

Table A-1.

Beep/Power LED Codes

Beeps

Power LED

Probable Cause

 

 

 

2 beeps

Blinks red 2 times @ 1 Hz

Processor thermal shut down. Check air flow, fan operation,

 

 

and CPU heatsink

 

 

 

3 beeps

Blinks red 3 times @ 1 Hz

Processor not installed. Install or reseat CPU.

 

 

 

4 beeps

Blinks red 4 times @ 1 Hz

Power failure (power supply is overloaded). Check storage

 

 

devices, expansion cards and/or system board (CPU power

 

 

connector P3).

 

 

 

5 beeps

Blinks red 5 times @ 1 Hz

Pre-video memory error. Incompatible or incorrectly seated

 

 

DIMM.

 

 

 

6 beeps

Blinks red 6 times @ 1 Hz

Pre-video graphics error. On system with integrated graphics,

 

 

check/replace system board. On system with graphics card,

 

 

check/replace graphics card.

 

 

 

7 beeps

Blinks red 7 times @ 1 Hz

PCA failure. Check/replace system board.

 

 

 

8 beeps

Blinks red 8 times @ 1 Hz

Invalid ROM (checksum error). Reflash ROM using CD or

 

 

replace system board.

 

 

 

9 beeps

Blinks red 9 times @ 1 Hz

System powers on but fails to boot. Check power supply, CPU,

 

 

system board.

 

 

 

10 beeps

Blinks red 10 times @ 1 Hz

Bad option card.

NOTE: Audible indications occur only for the first five cycles of the error indication. Visual indications occur indefinitely until power is removed or until error is corrected.

 

Technical Reference Guide

www.hp.com

A-1

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HP dc7900 manual Error Messages and Codes, Table A-1 Beep/Power LED Codes, Beeps Power LED Probable Cause

dc7900 specifications

The HP dc7900 is a well-regarded desktop solution that serves as a testament to HP's commitment to performance, reliability, and user accessibility. Introduced as part of HP’s Compaq line and designed primarily for business professionals, the dc7900 combines powerful processing capabilities with a compact form factor that suits various office environments.

One of the standout features of the HP dc7900 is its robust configuration options. It typically comes equipped with Intel's Core 2 Duo or Quad processors, giving users the ability to handle demanding applications seamlessly. The inclusion of Intel's technologies, such as Intel vPro, enhances remote management and IT control, making it an ideal choice for businesses looking to streamline their operations.

The dc7900 is designed with flexibility in mind. It offers multiple form factors, including mini-tower, small form factor, and ultra-slim desktop configurations. This variety enables organizations to choose a model that best fits their workspace requirements, maximizing both efficiency and aesthetics. The small footprint models are particularly beneficial in space-constrained environments, while the mini-tower version provides expandability for future upgrades.

In terms of graphics capabilities, the HP dc7900 typically features integrated Intel graphics, with options to install discrete graphics cards for users who require enhanced visual performance. This makes the dc7900 suitable for tasks ranging from standard office applications to more graphics-intensive responsibilities.

Connectivity is another key characteristic of the HP dc7900. It is equipped with a variety of ports, including USB 2.0 and audio jacks, allowing users to connect peripherals easily. Additionally, the dc7900 supports legacy connections, making it easier for businesses with older equipment to integrate new systems without hassle.

Durability and reliability are hallmarks of the HP dc7900. Built with high-quality materials and subjected to rigorous testing, this desktop is designed to withstand the demands of a bustling office environment. Furthermore, HP's comprehensive warranty and support options assure businesses of the reliability of their investment.

The HP dc7900 is not just a powerful desktop; it’s a versatile and dependable solution for modern businesses. With its combination of performance, expandability, and solid build quality, the dc7900 remains a relevant choice for those looking to enhance their productivity and efficiency in the workplace.