HP Understanding Beep Codes and BIOS Diagnostic Codes

System Board

Standard and Optional Boards

System boards with thermal grease, alcohol pad, and CPU socket cover

1	System board	616409-001
Memory modules
2	2 GB, PC3-10600	629026-001
		576110-001
2	1 GB, PC3-10600	629025-001
		576109-001
Other boards
LSI 56K modem, PCIe		490689-001
HP Wireless 802.11b/g/n WLAN card		538048-001
802.11b/g/n WLAN card, for use in ROW		498307-001
ATI Radeon HD4350 (RV710) PCIe x16 graphics card, 512 MB		586750-001
ATI Radeon HD5450 PCIe graphics card, 1 GB		601155-001
ATI Radeon HD5450 PCIe graphics card, 512 MB		617079-001
GeForce G315, PCIe graphics card, 1 GB		619934-001
GeForce G320, PCIe graphics card, 1 GB		615793-001
GeForce G210, PCIe graphics card, 512 MB		586382-001
Intel Gigabit NIC, includes bracket		490367-001
HP FireWire IEEE 1394 PCI card, FH		515182-001
1394 PCI card, 3 port, FH		441448-001
Antenna, dual band, 802.11		583345-001
Intel Celeron Processors with alcohol pad and thermal grease:
E3400, 1-MB cache, 2.60 GHz		602071-001
Intel Core2 Duo Processors with alcohol pad and thermal grease:
E7600, 3-MB cache, 3.06 GHz		573954-001
E7500, 3-MB cache, 2.93 GHz		531988-001
E6800, 2-MB cache, 3.33 GHz		631758-001
E6700, 2-MB cache, 3.20 GHz		418950-001
E6600, 2-MB cache, 3.06 GHz		602070-001
E6500, 2-MB cache, 2.93 GHz		586748-001
E5700, 2-MB cache, 3.00 GHz		631759-001
E5500, 2-MB cache, 2.80 GHz		613035-001
E5400, 2-MB cache, 2.70 GHz		586743-001

System Board Connectors and Jumpers (position of some untitled components may vary in location)

PROCESSOR	Processor socket	PCI2	PCI slot
CPU FAN	Fan connector	PCIE1X1	PCIe x1 slot
DIMM1-2	Memory slots	PCIE1X	PCIe x1 slot
ATX_POWER	24-pin main power connector	PCIE16X	PCIe x16 slot
BATTERY	RTC battery socket	AUDIO	External in/out connectors
SATA0-3	Drive connectors	NIC_USB	Stacked network/USB connec-
			tors
F_PANEL	Front I/O connector	USB	Stacked USB connectors
P154	Front I/O connector	ATX_12V	4-pin CPU power connector
P152	Front I/O connector	VGA	Monitor connector
F_AUDIO	Front audio connector

Diagnostic Beep Codes

The Power-On Self-Test (POST) is a series of diagnostic tests that runs automatically when the computer is powered on. If the POST detects an error, this causes an audible beep code to sound. The POST beep codes are not necessarily accompanied by an associated, visible error code or text message.

The following table shows the POST beep codes, their meanings, and the recommended actions for solving the problem.

Diagnostic Beep Codes

Beeps	Diagnosis	Recommended Action
1 short, 1 long	Bad memory or memory configura-	Check that the memory modules
	tion error	have been installed correctly and
		that proper modules are used.
2 short, 1 long	No graphics card installed or graph-	For systems with a graphics card:
	ics card initialization failed.	1.	Reseat the graphics card. Power
			on the system.
		2.	Replace the graphics card.
		3.	Replace the system board.
		For systems with integrated graph-
		ics, replace the system board.
3 short, 1 long	CPU configuration error or invalid	For systems with a graphics card:
	CPU detected before graphics card	1.	Reseat the graphics card. Power
	initialized.
			on the system.
		2.	Replace the graphics card.
		3.	Replace the system board.
		For systems with integrated graph-
		ics, replace the system board.
1 short, short	No legacy floppy drive or optical	1. Check cable connections.
pause	drive found	2.	Run the Setup utility and ensure
			the device port is enabled.
2 short, long	No floppy diskette or CD found	1. Check the type of drive you are
sec pause			using and use the correct media
			type.
		2.	Replace the diskette or CD with a
			new one.
3 short, long	Flashing not ready (missing utility	Upgrade the BIOS to proper ver-
sec pause	or BIOS image file, etc.)	sion.
4 short, long	Flashing operation has failed	1. Verify the correct ROM.
sec pause	(checksum error, corrupted image,	2.	Flash the ROM if needed.
	etc.)
		3.	If an expansion board was
			recently added, remove it to see if
			the problem remains.
		4.	Clear CMOS.
		5.	If the message disappears, there
			may be a problem with the
			expansion card.
		6.	Replace the system board.
5 short, long	BIOS recovery was successful	No action required.
sec pause

HP 500B, MT 635950-001 page 2