Desktop Management Guide for more

Table B-2Diagnostic Front Panel LEDs and Audible Codes (continued)

Activity	Beeps	Possible Cause	Recommended Action

Red Power LED flashes five	5	Pre-video memory error.	CAUTION: To avoid damage to the DIMMs or
times, once every second,			the system board, you must unplug the computer
followed by a two second			power cord before attempting to reseat, install, or
pause. Beeps stop after fifth			remove a DIMM module.
iteration but LEDs continue			1.	Reseat DIMMs.
until problem is solved.			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			2.	Replace the graphics card.
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	7	System board failure	Replace the system board.
seven times, once every		(ROM detected failure
second, followed by a two		prior to video).
second 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
times, once every second,		bad checksum.		BIOS image. See the “Boot Block
followed by a two second				Emergency Recovery Mode” section of the
pause. Beeps stop after fifth				Desktop Management Guide for more
iteration but LEDs continue				information.
until problem is solved.			2.	Replace the system board.
			2.	Replace the system board.

Red Power LED flashes nine	9	System powers on but is	1.	Check that the voltage selector, located on
times, once every second,		unable to boot.		the rear of the power supply (some
followed by a two second				models), is set to the appropriate voltage.
pause. Beeps stop after fifth				Proper voltage setting depends on your
iteration but LEDs continue				region.
until problem is solved.			2.	Unplug the AC power cord from the
			2.	Unplug the AC power cord from the
				computer, wait 30 seconds, then plug the
				power cord back in to the computer.
			3.	Replace the system board.
			4.	Replace the processor.

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 139

E3S87UTABA, Pro 3515 E3S87UTABA, Pro 3400 XZ939UT#ABA, C7A31UT#ABA, Pro 3400 A7L25UT#ABA specifications

The HP D3K31UTABA, 3500p D8C44UTABA, C7A35UT#ABA, D3K31UT#ABA, and D8C44UT#ABA are part of HP's extensive lineup of business laptops and desktop computers, designed to meet the demanding needs of professionals and enterprises. Each model showcases HP's commitment to performance, durability, and user-friendly features, making them suitable for a range of applications in various business environments.

The HP D3K31UTABA is a compact and lightweight laptop that emphasizes portability without compromising performance. It typically features an Intel Core i5 or i7 processor, ensuring smooth multitasking and efficient handling of various applications. The device is usually equipped with a 13.3-inch or 14-inch display with Full HD resolution, offering vibrant colors and sharp visuals that enhance productivity during long hours of work. With a robust battery life, users can work on the go without worrying about frequent recharges.

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The D3K31UT#ABA and D8C44UT#ABA share similarities in design and performance but may differ in specifications such as RAM size, graphics capabilities, and ports for connectivity. Both models offer scalable configurations, allowing businesses to customize them according to their specific needs.

All these models benefit from HP's proprietary technologies such as HP Fast Charge, allowing users to recharge their batteries quickly, and HP Sure Start, which provides self-healing BIOS protection. They also come with HP’s security suite, ensuring data integrity and user privacy.

In summary, the HP D3K31UTABA, 3500p D8C44UTABA, C7A35UT#ABA, D3K31UT#ABA, and D8C44UT#ABA collectively represent HP's dedication to producing high-quality computing devices that cater to the diverse needs of today’s professionals. With a focus on performance, security, and durability, these models are well-equipped to enhance productivity in any business setting.

HP D3K73UT#ABA, Pro 3515 E3S87UTABA, D3K31UTABA, 3500p D8C44UTABA Desktop Management Guide for more

Models: E3S87UTABA Pro 3515 E3S87UTABA Pro 3400 XZ939UT#ABA C7A31UT#ABA Pro 3400 A7L25UT#ABA C7A34UT D3K73UT#ABA C7A33UT#ABA D8C44UT#ABA D3K31UT#ABA C7A35UT#ABA 3500p D8C44UTABA D3K31UTABA

Table B-2Diagnostic Front Panel LEDs and Audible Codes (continued)

Activity

E3S87UTABA, Pro 3515 E3S87UTABA, Pro 3400 XZ939UT#ABA, C7A31UT#ABA, Pro 3400 A7L25UT#ABA specifications