The following beep codes are common to many HP and Compaq desktop computers. Use these codes first before referring to the other code lists.
1 short beep and 1 long beep Memory problem
2 short beeps and 1 long beep (repeats 5 times) Unable to initialize video or video card required but not installed
3 short beeps and 1 long beep CPU configuration error or CPU type is not compatible
The following beep codes are common to many HP and Compaq desktop computers that can occur while restoring, flashing or updating the BIOS :
1 short beep Legacy floppy drive or CD/DVD drive not detected
2 short beeps Floppy diskette or compact disc not detected
3 short beeps Unable to start flashing (such as when missing a utility or BIOS image)
4 short beeps Flashing failed (checksum error, corrupted image, etc.)
5 short beeps BIOS recovery successful
Beep codes for American Megatrends, Inc (AMI) BIOS
The following AMI beep codes can occur when there is a problem during the attempt of a normal system startup. You can use these codes to help troubleshoot issues related to system startup. When troubleshooting further, please refer to the section What to do when beep codes occur .
1 Memory timing failure
2 Memory parity error
3 Memory read or write failure
4, 5, 6, 7 Fatal errors related to the operation of critical motherboard components - such as the CPU.
8 Video memory
The following table lists AMI beep codes that can occur when attempting to flash or recover the BIOS. You can use these codes to help troubleshoot problems related to system startup or flashing BIOS memory (such as in BIOS upgrades).
1 No media detected
2 ROM file not found in root directory
3 Insert next media volume
4 Flash Programming successful
5 Failure while reading file
7 Flash EPROM not detected
10 Failure while erasing flash memory
11 Flash program error
12 Problem with ROM file size
13 ROM image does not match BIOS requirements
Beep codes for Phoenix BIOS
You can use these codes to help troubleshoot issues related to system startup or flashing BIOS memory (such as in BIOS upgrades). When troubleshooting further, please refer to the section What to do when beep codes occur .
Four series of beeps indicate a fatal error; that is, a problem exists which prevents the computer from starting. For example, there might be two beeps, a short pause, one beep, a short pause, one beep, a short pause, and then three beeps; this is represented as 2-1-1-3 in the chart below.
One short beep 0 POST process completed successfully - normal startup
1-1-1-3 02h Verify real mode
1-1-2-1 04h Get CPU type
1-1-2-3 06h Initialize system hardware
1-1-3-1 08h Initialize chipset registers with initial POST values
1-1-3-2 09h Set in POST flag
1-1-3-3 0Ah Initialize CPU registers
1-1-4-1 0Ch Initialize cache to initial POST values
1-1-4-3 0Eh Initialize I/O
1-2-1-1 10h Initialize Power Management
1-2-1-2 11h Load alternate registers with initial POST values
1-2-1-3 12h Jump to UserPatch0
1-2-2-1 14h Initialize keyboard controller
1-2-2-3 16h BIOS ROM checksum
1-2-3-1 18h 8254 timer initialization
1-2-3-3 1Ah 8237 DMA controller initialization
1-2-4-1 1Ch Reset Programmable Interrupt Controller
1-3-1-1 20h Test DRAM refresh
1-3-1-3 22h Test 8742 Keyboard Controller
1-3-2-1 24h Set ES segment register to 4 GB
1-3-3-1 28h Autosize DRAM
1-3-3-3 2Ah Clear 512K base RAM
1-3-4-1 2Ch Test 512 base address lines
1-3-4-3 2Eh Test 512K base memory
1-4-1-3 32h Test CPU bus-clock frequency
1-4-2-1 34h CMOS RAM read/write failure
1-4-2-4 37h Reinitialize the chipset
1-4-3-1 38h Shadow system BIOS ROM
1-4-3-2 39h Reinitialize the cache
1-4-3-3 3Ah Autosize cache
1-4-4-1 3Ch Configure advanced chipset registers
1-4-4-2 3Dh Load alternate registers with CMOS values
2-1-1-1 40h Set Initial CPU speed
2-1-1-3 42hs Initialize interrupt vector
2-1-2-1 44h Initialize BIOS interrupts
2-1-2-3 46h Check ROM copyright notice
2-1-2-4 47h Initialize manager for PCI Options ROMs
2-1-3-1 48h Check video configuration against CMOS
2-1-3-2 49h Initialize PCI bus and devices
2-1-3-3 4Ah Initialize all video adapters in system
2-1-4-1 4Ch Shadow video BIOS ROM
2-1-4-3 4Eh Display copyright notice
2-2-1-1 50h Display CPU type and speed
2-2-1-3 52h Test keyboard
2-2-2-1 54h Set key click if enabled
2-2-2-3 56h Enable keyboard
2-2-3-1 58h Test for unexpected interrupts
2-2-3-3 5Ah Display prompt "Press F2 to enter SETUP"
2-2-4-1 5Ch Test RAM between 512 and 640k
2-3-1-1 60h Test expanded memory
2-3-1-3 62h Test extended memory address lines
2-3-2-1 64h Jump to UserPatch1
2-3-2-3 66h Configure advanced cache registers
2-3-3-1 68h Enable external and CPU caches
2-3-3-2 69h Initialize SMI handler
2-3-3-3 6Ah Display external cache size
2-3-4-1 6Ch Display shadow message
2-3-4-3 6Eh Display non-disposable segments
2-4-1-1 70h Display error messages
2-4-1-3 72h Check for configuration errors
2-4-2-1 74h Test real-time clock
2-4-2-3 76h Check for keyboard errors
2-4-4-1 7Ch Set up hardware interrupts vectors
2-4-4-3 7Eh Test coprocessor if present
3-1-1-1 80h Disable onboard I/O ports
3-1-1-3 82h Detect and install external RS232 ports
3-1-2-1 84h Detect and install external parallel ports
3-1-2-3 86h Re-initialize onboard I/O ports
3-1-3-1 88h Initialize BIOS data area
3-1-3-3 8Ah Initialize extended BIOS data area
3-1-4-1 8Ch Initialize floppy controller
3-2-1-1 90h Initialize hard-disk controller
3-2-1-2 91h Initialize local-bus hard-disk controller
3-2-1-3 92h Jump to UserPatch2
3-2-2-1 94h Disable A20 address line
3-2-2-3 96h Clear huge ES segment register
3-2-3-1 98h Search for option ROMs
3-2-3-3 9Ah Shadow option ROMs
3-2-4-1 9Ch Set up Power Management
3-2-4-3 9Eh Enable hardware interrupts
3-3-1-1 A0h Set time of day
3-3-1-3 A2h Check key lock
3-3-3-1 A8h Erase F2 prompt
3-3-3-3 Aah Scan for F2 key stroke
3-3-4-1 AChP Enter SETUP
3-3-4-3 Aeh Clear in-POST flag
3-4-1-1 B0h Check for errors
3-4-1-3 B2h POST done--prepare to boot operating system
3-4-2-1 B4h One beep
3-4-2-3 B6h Check password (optional)
3-4-3-1 B8h Clear global descriptor table
3-4-4-1 BCh Clear parity checkers
3-4-4-3 Beh Clear screen (optional)
3-4-4-4 BFh Check virus and backup reminders
4-1-1-1 C0h Try to boot with INT 19
4-2-1-1 D0h Interrupt handler error
4-2-1-3 D2h Unknown interrupt error
4-2-2-1 D4h Pending interrupt error
4-2-2-3 D6h Initialize option ROM error
4-2-3-1 D8h Shutdown error
4-2-3-3 Dah Extended Block Move
4-2-4-1 DCh Shutdown error
4-2-4-3 Deh Keyboard Controller Failure
4-3-1-3 E2h Initialize the chipset
4-3-1-4 E3h Initialize refresh counter
4-3-2-1 E4h Check for Forced Flash
4-3-2-2 E5h Check HW status of ROM
4-3-2-3 E6h BIOS ROM is OK
4-3-2-4 E7h Do a complete RAM test
4-3-3-1 E8h Do OEM initialization
4-3-3-2 E9h Initialize interrupt controller
4-3-3-3 Eah Read in bootstrap code
4-3-3-4 Ebh Initialize all vectors
4-3-4-1 Ech Boot the Flash program
4-3-4-2 Edh Initialize the boot device
4-3-4-3 Eeh Boot code was read OK
Beep codes for Award BIOS
Most Award post codes are displayed to screen. If a beep code occurs the problem is likely occurring before the system can display video (check the video card or memory).
1 short beep POST process completed successfully - normal startup
1 long beep followed by 2 or 3 short beeps Unable to initialize video (to display the post code)
Continuous beeping without pause Serious system related issue such as CPU overheating
Other beep conditions Memory errors.
| Title | Compaq Beep Code |
| Description | Beep codes common to HP and Compaq Desktop PCs The following beep codes are common to many HP and Compaq desktop computers. Use these codes... |
| Review Rating | 4/5
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