For systems with integrated graphics, replace

Table 10-2Diagnostic front panel LEDs and audible codes (continued)

Activity	Beeps	Possible Cause	Recommended Action

Red Power LED flashes four	4	Power failure (power	1.	Open the hood and ensure the 4 or 6-wire
times, once every second,		supply is overloaded).		power supply cable is seated into the
followed by a two second				connector on the system board.
pause. Beeps stop after fifth			2.	Check if a device is causing the problem by
iteration but LEDs continue until			2.	Check if a device is causing the problem by
problem is solved.				removing ALL attached devices. Power on
				the system. If the system enters the POST,
				then power off and replace one device at a
				time and repeat this procedure until failure
				occurs. Replace the device that is causing
				the failure. Continue adding devices one at
				a time to ensure all devices are functioning
				properly.
			3.	Replace the power supply.
			4.	Replace the system board.

Red Power LED flashes five 5 Pre-video memory error. times, once every second,

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

CAUTION: To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.

1.Reseat DIMMs.

2.Replace DIMMs one at a time to isolate the faulty module.

3.Replace third-party memory with HP memory.

			4.	Replace the system board.

Red Power LED flashes six	6	Pre-video graphics error.	For systems with a graphics card:
times, once every second,			1.	Reseat the graphics card.
followed by a two second			1.	Reseat the graphics card.
pause. Beeps stop after fifth			2.	Replace the graphics card.
iteration but LEDs continue until			2.	Replace the graphics card.
iteration but LEDs continue until
problem is solved.			3.	Replace the system board.
			3.	Replace the system board.
			For systems with integrated graphics, replace the
			system board.

Red Power LED flashes seven	7	System board failure	Replace the system board.
times, once every second,		(ROM detected failure
followed by a two second		prior to video).
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.

Red Power LED flashes eight	8	Invalid ROM based on	1.	Reflash the system ROM with the latest BIOS
times, once every second,		bad checksum.		image. See the “Boot Block Emergency
followed by a two second				Recovery Mode” section of the Desktop
pause. Beeps stop after fifth				Management Guide for more information.
iteration but LEDs continue until			2.	Replace the system board.
problem is solved.			2.	Replace the system board.

Interpreting POST diagnostic front panel LEDs 141

800 G1 specifications

The HP ProDesk 800 G1 is a powerful and versatile desktop computer designed for business and professional use. Released as part of HP's ProDesk series, this model is known for its reliability, performance, and advanced features, making it an ideal choice for various office environments.

One of the standout characteristics of the HP ProDesk 800 G1 is its robust performance. Equipped with Intel's 4th generation Core processors, users can choose from a range of options including Core i3, i5, and i7, ensuring that there is a suitable option for tasks ranging from basic office applications to more demanding workloads such as graphic design and data analysis. The desktop supports up to 32GB of DDR3 RAM, enabling multitasking capabilities that allow users to run multiple applications simultaneously without performance degradation.

Storage options on the HP 800 G1 are flexible, including traditional hard disk drives (HDD) and solid-state drives (SSD). The inclusion of SSDs significantly enhances system responsiveness and boot times, making it a great option for users who require quick access to files and applications. Additionally, with varying storage capacities available, users can choose a configuration that best fits their data requirements.

Connectivity is another area where the HP ProDesk 800 G1 excels. It features multiple USB ports, including USB 3.0 for faster data transfer speeds, along with legacy ports such as USB 2.0. The desktop is also equipped with DisplayPort and VGA outputs for versatile display options, allowing users to connect multiple monitors for enhanced productivity. Furthermore, it includes Ethernet for reliable wired network connections and can support wireless connectivity options for added convenience.

In terms of security, the HP ProDesk 800 G1 has several built-in features, such as HP Client Security and TPM (Trusted Platform Module) for hardware-based encryption. This ensures that sensitive data remains protected, making it suitable for businesses that prioritize data security.

The design of the HP ProDesk 800 G1 is both functional and aesthetically pleasing. Its compact form factor allows for easy placement in limited spaces, while the tool-less design simplifies upgrades and maintenance. Additionally, HP’s commitment to energy efficiency is evident in this model, with ENERGY STAR certification ensuring that it operates in an environmentally friendly manner.

Overall, the HP ProDesk 800 G1 stands out as a reliable desktop computer that combines performance, security, and expandability, making it a smart investment for any business looking for a robust computing solution.

HP 800 G1 manual For systems with integrated graphics, replace

Models: 800 G1

Table 10-2Diagnostic front panel LEDs and audible codes (continued)

Activity

Possible Cause

For systems with integrated graphics, replace the

800 G1 specifications