Beep Codes Post Description | HP 2114AH, 2500, 2183AF, 2182US, 2182AT

	Beep Codes	POST Description
3-1-3-2		Enable Non-Maskable Interrupts (NMIs)
3-1-3-2

3-1-3-3		Initialize Extended BIOS Data Area
3-1-3-3

3-1-3-4		Test and initialize PS/2 mouse
3-1-3-4

3-1-4-1		Initialize floppy controller
3-1-4-1

3-1-4-4		Determine number of ATA drives (optional)
3-1-4-4

	3-2-1-1	Initialize hard-disk controllers
	3-2-1-1
	3-2-1-2	Initialize local-bus hard-disk controllers
	3-2-1-2
	3-2-1-3	Jump to UserPatch2
	3-2-1-3
	3-2-1-4	Build MPTABLE for multi-processor boards
	3-2-1-4
	3-2-2-2	Install CD-ROM for boot
	3-2-2-2
	3-2-2-3	Clear huge ES segment register
	3-2-2-3
	3-2-2-4	Fix up Multi Processor table
	3-2-2-4
	3-2-3-2	Check for SMART Drive (optional)
	3-2-3-2
	3-2-3-3	Shadow option ROMs
	3-2-3-3
	3-2-4-1	Set up Power Management
	3-2-4-1
	3-2-4-2	Initialize security engine (optional)
	3-2-4-2
	3-2-4-3	Enable hardware interrupts
	3-2-4-3
	3-2-4-4	Determine number of ATA and SCSI drives
	3-2-4-4
3-3-1-1		Set time of day
3-3-1-1

3-3-1-3		Check key lock
3-3-1-3

3-3-2-1		Initialize typematic rate
3-3-2-1

3-3-3-1		Erase F2 prompt
3-3-3-1

3-3-3-3		Scan for F2 keystroke
3-3-3-3

3-3-4-1		Enter SETUP
3-3-4-1

3-3-4-3		Clear Boot flag
3-3-4-3

3-4-1-1		Check for errors
3-4-1-1

3-4-1-2		Inform ROMPilot about the end of POST
3-4-1-2

3-4-1-3		POST done—prepare to boot OS
3-4-1-3

3-4-2-2		Terminate QuietBoot (optional)
3-4-2-2

3-4-2-3		Check password (optional)
3-4-2-3

	3-4-2-4	Initialize ACPI BIOS
	3-4-2-4
	3-4-3-2	Prepare Boot
	3-4-3-2
	3-4-3-3	Initialize SMBIOS
	3-4-3-3
	3-4-3-4	Initialize PnP Option ROMs
	3-4-3-4
	3-4-4-1	Clear parity checkers
	3-4-4-1
	3-4-4-2	Display MultiBoot menu
	3-4-4-2
3-4-4-3		Clear screen (optional)
3-4-4-3

Service Manual		Troubleshooting and Diagnostics	3-25

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

The HP 2135US is a versatile all-in-one desktop computer designed to meet the needs of home and small office users. This robust machine is particularly attractive for individuals who seek a blend of performance, aesthetics, and user-friendly features.

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To sum up, the HP 2135US represents a blend of performance, connectivity, and design sophistication. Its comprehensive set of features makes it an excellent choice for users seeking an all-in-one solution for both work and play, proving itself to be a worthy addition to any modern workspace or home office setup.

Beep Codes

POST Description

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