More Beep Codes

  • Beep codes are used by the BIOS (Basic Input and Output System) to indicate a serious or fatal error to the end user.
  • Beep codes are used when an error occurs before the system video has been initialized.
  • Beep codes will be generated by the system board speaker, commonly referred to as the "PC speaker".
  • Please note that not all Bios Manufacturers or Systems Designers use the same Beep Codes.
Number of Beeps Description




Award Bios

1 long beep + 2 short beeps
Significance - Error in the display system (graphic chart or adaptor)
Possible Remedy - Check the connection of the graphics board (it may be that it is badly inserted)

1 beep
Significance - Error of cooling of the RAM
Possible Remedy - Reinstall the bars of memory. If that persists, change them

2 beeps
Significance - Error in the first 64 KB of memory

3 beeps
Significance - Failing conventional memory

5 beeps
Significance - Error of processor

6 beeps
Significance - Error of keyboard
Possible Remedy - Check if no key is inserted (keyboard, mouse) and if all are connected correctly

8 beeps
Significance - Impossible posting
Possible Remedy - Reseat the graphics card or its memory extension. If that persists, change the graphics card.



Friendly Bios

1 beep
Significance - Error of cooling of the RAM
Possible Remedy - Reinstall the memory bars. If that persists, change them or modify adjustments of access in memory in the BIOS

2 short beeps
Significance - Error of parity in the first 64 KB of the memory

3 short beeps
Significance - Failure report in the first 64KB

4 short beeps
Significance - Failure report in the first 64KB or Timer failure
Possible Remedy - Defective mother board. Change your mother board

5 short beeps
Significance - Error of processor
Possible Remedy - Reintegrate the processor

6 short beeps
Significance - Failure of keyboard (circuit 8042) or GateA20
Possible Remedy - Change the keyboard or the chip controller keyboard

7 short beeps
Significance - Error of virtual mode
Possible Remedy - Defective mother board. Change the mother board

8 short beeps
Significance - The video controller is missing or RAM is defective
Possible Remedy - Reintegrate the graphics adapter or its memory extension. If that persists, change graphics adapter or remove the memory of the
adapter if you added some.

9 short beeps
Significance - Error of the ROM of the BIOS
Possible Remedy - Reintegrate circuit DIP of the BIOS

10 short beeps
Significance - Error of access to memory CMOS
Possible Remedy - Defective mother board. Change mother board

11 short beeps
Significance - Error of the external hiding place storage Level2
Possible Remedy - Correctly reintegrate the memory hiding place

1 beep long + 2 short beeps
Significance - Video error
Possible Remedy - Reintegrate graphics adapter or its memory extension.
If that persists change graphics board.

1 long beep + 3 short beeps
Significance - Video error
Possible Remedy - Reintegrate graphics adapter or its memory extension.
If that persists change graphics board.



Phoenix BIOS

1-1-3 Beeps
Significance - Error of access to memory CMOS

1-1-4 Beeps
Significance - Failure of ROM BIOS

1-3-1 Beeps
Significance - Circuit of cooling report

1-4-2 Beeps
Significance - Error parity in the first 64KB

1-3-3 Beeps
Significance - Failure report in the first 64KB

1-3-4 Beeps
Significance - Failure report in the first 64KB

3-2-4 Beeps
Significance - Controller keyboard (circuit 8042)

3-1-1 Beeps
Significance - Failure of circuit DMA

3-1-2 Beeps
Significance - Failure of circuit DMA

3-3-4 Beeps
Significance - Video controller




Phoenix BIOS v4.0 release 6

1-2-2-3 Beeps
Significance - Erroneous Checksum BIOS
Possible Remedy - Change the pile of the BIOS

1-3-1-1 Beeps
Significance - Cooling DRAM
Possible Remedy - Put the adjustments of the BIOS on FAIL

1-3-1-3 Beeps
Significance - Controller keyboard
Possible Remedy - Change the keyboard

1-3-4-1 Beeps
Significance - Address first 512KB of DRAM

1-3-4-3 Beeps
Significance - data of first 512KB of DRAM




Beeps of BIOS Phoenix, valid for the Mercury motherboard KT266 & others...

1 beep on boot up
Significance - System boot OK

2 short beeps
Significance - CMOS setting error

1 long beep + 1 short beep
Significance - DRAM error

1 long beep + 2 short beeps
Significance - Display card gold monitor connection error

1 long beep + 3 short beeps
Significance - Keyboard error

1 long beep + 9 short beeps
Significance - ROM error

Long beep - continuous
Significance - DRAM did not seat

Short beep - continuous
Significance - Power supply error




Error messages on starting

CMOS CHECKSUM FAILURE
Significance - Problem with battery, replace it

BIOS ROM CHECKSUM Error System HALTED
Significance - Error in the BIOS. Replace the chip

KB/INTERFACE ERROR
Significance - The keyboard is damaged or perhaps badly connected

FDD CONTROLLER FAILURE
Significance - Error of the controller of disk drive
Possible Remedy - Check if the cable which connects it to motherboard is
connected properly. If the problem persists change the controller

HDD CONTROLLER FAILURE
Significance - The hard disk is damaged or perhaps badly connected

MEMORY ERROR DURING MEMORY TEST
Possible Remedy - Check that memory bars are installed correctly

CMOS SYSTEM OPTIONS NOT SET RUN SETUP UTILITY
Significance - No parameters are defined in the setup BIOS
Possible Remedy - Launch the BIOS and enter the parameters

CMOS MEMORY SIZE MISMATCH
Significance - Declared memory steps physically installed

UNABLE TO INITIALIZE HARDWARE DRIVE (STANDARD DRIVE?)
Significance - In this case the hard disk drive was not defined or badly defined.

KEYBOARD IS LOCKED
Significance - The keyboard is having problems
Possible Remedy - Unbolt it by putting the key in the lock present on the front of the majority of the PC's and turn-there. To finish, start again the
PC or press on a key

"8042 Gate-A20 Error"
Significance - The controller of the keyboard (8042) does not function
Possible Remedy - Often, the controller quite simply left support test, reintegrate correctly.
If not change it

"CH-2Timer error"
Significance - The second timer has a problem
Possible Remedy - Conflict caused by a peripheral

"Mask memory bad, C not enable mask!"
Significance - Lapse of the memory hiding place

"Address line shorts"
Significance - Logical problem in the decoding of an address location. It can be a question of a magnetic disturbance.
Possible Remedy - Shut down and turn on the pc 30 seconds later

"On board parity error"
Significance - Error of parity in the memory of the mother board
Possible Remedy - Make an antiviral check

"drunk DMA time out"
Significance - A peripheral monopolized the signals of the bus for one length of time higher than the allocated duration (7.8 ms). That generally means that the accused peripheral is defective
Possible Remedy - Replace the peripheral which poses problem

No ROM BASIC
Significance - Heritage of IBM PC, this message indicates that no unit of BOOT is defined in the setup BIOS




Below is complete beep list for KT266a motherboard

1 short : system boot Ok. 2 short : CMOS setting error
1 long 1 short : DRAM error
1 long 2 short : Display card or monitor connection error
1 long 3 short : Keyboard error
1 long 9 short : ROM error
continue long : DRAM did not seat
continue short : Power supply error

Phoenix BIOS has its own codes, could be valid for other Mercury boards.