Interpreting POST Diagnostic Front Panel LEDs and Audible Codes

This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.

NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed.

Not all diagnostic lights and audible codes are available on all models.

Table A-2Diagnostic Front Panel LEDs and Audible Codes

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

Green Power LED On.

None

Computer on.

None

Green Power LED flashes every None

Computer in Suspend to

two seconds.

RAM mode (some models

 

only) or normal Suspend

 

mode.

None required. Press any key or move the mouse to wake the computer.

Red Power LED flashes two

2

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

Thermal protection activated:

Air flow is restricted, a fan may not be functioning, or the heatsink is not properly attached.

1.Clean the air vents on the front, back, or any other vented side of the computer.

2.Ensure that there is a 10.2 cm (4 in) clearance on all vented sides of the computer to permit the required airflow.

3.Ensure that computers are not so near each other that they are subject to each other's re- circulated or preheated air.

4.If the computer is within an enclosure, ensure that there is proper intake and exhaust ventilation for the enclosure.

5.If a message appears on the screen indicating that a fan is not working, replace the fan.

6.Ensure that the heat sink is properly attached.

Red Power LED flashes three

3

times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.

Processor not installed (not

1.

Check to see that the processor is present.

an indicator of bad

2.

Reseat the processor.

processor).

106 Appendix A POST Error Messages

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HP 6000 Pro manual Table A-2Diagnostic Front Panel LEDs and Audible Codes

6000 Pro specifications

The HP Pro 6000 series desktops are engineered to deliver an impressive blend of performance, reliability, and efficient power management, making them a solid choice for businesses and professionals. This series is designed to cater to a variety of computing needs, from everyday tasks to more demanding applications.

One of the key features of the HP Pro 6000 is its versatility in configuration options. Users can choose from a range of processors, including Intel's powerful Core i5 and i7 options, which ensure fast and responsive performance for multi-tasking and resource-intensive applications. The desktops are equipped with various memory options, supporting up to 32 GB of DDR3 RAM, which enhances the ability to run multiple applications simultaneously without compromising speed.

Storage options in the Pro 6000 series are diverse, with traditional hard disk drives (HDD) offering substantial space for data storage, and solid-state drives (SSD) providing ultra-fast access times and reliability. This combination caters to different user needs, ensuring that both large storage capacities and speedy performance are available.

A notable characteristic of the HP Pro 6000 series is its design. The chassis is constructed with a focus on space-saving while still allowing for upgrades and expansions. It features multiple USB ports, including USB 3.0 for quicker data transfer, as well as options for legacy ports such as serial and parallel for compatibility with older devices. The series also supports various display outputs, including HDMI and VGA, allowing for connection to a range of monitors and projectors.

In terms of energy efficiency, the HP Pro 6000 is designed with sustainability in mind. It is Energy Star certified, meaning it meets strict energy efficiency guidelines, helping to reduce costs and environmental impact for businesses. Additionally, the system is built with advanced security features such as HP BIOS Protection and optional TPM (Trusted Platform Module) to safeguard sensitive data against unauthorized access.

Another critical feature is the connectivity options that the Pro 6000 offers. It includes integrated Ethernet for wired connections and optional Wi-Fi for wireless networking, ensuring that users can stay connected in various environments. Coupled with robust audio and video capabilities, the Pro 6000 series is well-suited for remote collaboration and multimedia tasks.

Overall, the HP Pro 6000 series desktops merge performance, adaptability, and security, making them an excellent investment for businesses looking to enhance productivity and efficiency while maintaining a focus on sustainability. Whether for small offices or larger enterprises, the Pro 6000 series provides a reliable and versatile computing solution that meets the demands of the modern workplace.