What to
do when beep codes occur
Listen to the beeping sound and write down the
number of beeps before each pause, if the beeps are long or short, or if the
beeps high or low in tone. Once a pattern is determined, use the following beep
code table to identify which component might be causing the problem: Use these codes to help troubleshoot problems
related to system start-up or flashing BIOS memory (such as in BIOS upgrades).
When troubleshooting further, 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:
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:
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 can occur while
restoring, flashing or updating the BIOS:
1short beep : Legacy floppy drive or CD/DVD drive not detected
2short beeps : Floppy diskette or compact disc not detected
3short beeps : Unable to start flashing (such as when missing a utility or
BIOS image)
4short beeps : Flashing failed (checksum error, corrupted image, etc.)
5short beeps : BIOS recovery successful
Perform the following steps to resolve beeping issues.
Before starting a task, turn off the computer, and then remove the power cord.
After completing a task, replace any covers, reconnect the power cord, turn on
the computer, and then listen for a beep code.
* Remove any media from the floppy drives, CD/DVD drives, USB ports,
and memory card reader slots, and disconnect all non-essential devices
(printers, scanners, external hard drives, and similar).
* Disconnect the mouse and keyboard, and then restart the computer.
If the beeping sound stops, repair or replace those devices.
* Hot air can damage internal components! Remove any obstructions
that block vents. Clean the cooling vents on the case to remove dust. If
cooling fans stop spinning or make strange noises, service the computer.
* Remove the memory cover, and then re-seat all
memory modules. If the computer stops beeping, a memory module might not have
been fully seated or connected.
If the computer has multiple memory modules, turn on the computer with
only one memory module installed. If the computer stops beeping, the memory
module might be defective, or might be the wrong type of memory for the
motherboard. Reinsert the memory into the socket to see if a connection was the
problem; otherwise replace the module. Repeat this process for all memory modules
installed in the computer If all of the above steps have been tried and the beeping sound still
exists, refer to beep code table specific to the motherboard of the computer
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 start-up. Use these codes to help troubleshoot problems related to system start-up. When troubleshooting further.
1 beep : Memory timing failure
2 beeps : Memory parity error
3beeps : Memory read or write failure
4, 5, 6, 7 : Fatal errors related to the operation of critical
motherboard components - such as the CPU.
8 beeps : Video memory
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 start-up or flashing
BIOS memory (such as in BIOS upgrades).
1beep : No media detected
2beeps : ROM file not found in root directory
3beeps : Insert next media volume
4beeps : Flash Programming successful
5beeps : Failure while reading file
7beeps : Flash EPROM not detected
10beeps : Failure while erasing flash memory
11beeps : Flash program error
12beeps : Problem with ROM file size
13beeps : ROM image does not match BIOS requirements
Beep codes for Phoenix BIOS
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.
eps
|
Post Code
|
Description of failure
|
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
|