Beep Codes Post Description | HP 2116EU, 2500, 2183AF, 2182US, 2182AT

	Beep Codes	POST Description
1-2-1-2		Load alternate registers with initial POST values
1-2-1-2

1-2-1-3		Restore CPU control word during warm boot
1-2-1-3

1-2-1-4		Initialize PCI Bus Mastering devices
1-2-1-4

1-2-2-1		Initialize keyboard controller
1-2-2-1

1-2-2-3		BIOS ROM checksum

	1-2-2-4	Initialize cache before memory Auto size
	1-2-2-4
	1-2-3-1	8254 timer initialization
	1-2-3-1
	1-2-3-3	8237 DMA controller initialization
	1-2-3-3
	1-2-4-1	Reset Programmable Interrupt Controller
	1-2-4-1
	1-3-1-1	Test DRAM refresh
	1-3-1-3	Test 8742 Keyboard Controller (on motherboard)
	1-3-2-1	Set ES segment register to 4 GB
	1-3-2-1
	1-3-3-1	Auto size DRAM; or wrong type or no RAM installed
	1-3-3-1
	1-3-3-2	Initialize POST Memory Manager
	1-3-3-2
	1-3-3-3	Clear 512 KB base RAM
	1-3-3-3
	1-3-4-1	RAM failure on address line xxxx
	1-3-4-3	RAM failure on data bits xxxx of low byte of memory bus
	1-3-4-4	Enable cache before system BIOS shadow
1-4-1-1		RAM failure on data bits xxxx of high byte of memory bus

1-4-1-3		Test CPU bus-clock frequency
1-4-1-3

1-4-1-4		Initialize Phoenix Dispatch Manager
1-4-1-4

1-4-2-3		Warm start shut down
1-4-2-3

1-4-3-1		Shadow system BIOS ROM
1-4-3-1

1-4-3-3		Auto size cache
1-4-3-3

1-4-4-1		Advanced configuration of chipset registers
1-4-4-1

1-4-4-2		Load alternate registers with CMOS values
1-4-4-2

2-1-1-2		Initialize extended memory for ROMPilot
2-1-1-2

2-1-1-3		Initialize interrupt vectors
2-1-1-3

2-1-2-2		POST device initialization
2-1-2-2

2-1-2-3		Check ROM copyright notice

	2-1-2-4	Initialize I20 support
	2-1-3-1	Check video configuration against CMOS
	2-1-3-1
	2-1-3-2	Initialize PCI bus and devices
	2-1-3-2
	2-1-3-3	Initialize all video adapters in system
	2-1-3-3
	2-1-3-4	QuietBoot start (optional)
	2-1-3-4
	2-1-4-1	Shadow video BIOS ROM
	2-1-4-1
2-1-4-3		Display BIOS copyright notice
2-1-4-3

Service Manual		Troubleshooting and Diagnostics	3-23

2547EA, 2550CA, 2552AI, 2541AH, 2543AH specifications

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Beep Codes

POST Description

2547EA, 2550CA, 2552AI, 2541AH, 2543AH specifications