Error Codes and Beep Codes

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This page gives an overview on hexadecimal and beep error codes generated by the BIOS or UEFI.

Beep Error Codes (IBM)

Beep signal Additional indicators Possible meanings
continuous beeps blank image on display panel
  • dead motherboard
0 beeps cooling fan spins up
power-on LED status indicator is lit green or amber
  • unsupported or dead processor
  • malfunctioning or dead RAM module
  • dead motherboard
1 beep unreadable, garbled, blank or blinking
images on the display panel
  • loose or damaged display panel cable
  • malfunctioning or dead display panel inverter
  • malfunctioning or dead display panel backlight
  • malfunctioning display panel logic board
  • malfunctioning graphics chip
  • dead motherboard
1 beep "Unable to access boot source" is displayed
on the display panel
  • malfunctioning or dead boot device
  • malfunctioning or dead I/O controller
1 long beep and 2 short beeps blank image on display panel
  • unsupported, loose, or dead graphics chip
  • dead display panel logic board
  • dead motherboard
1 long beep and 4 short beeps blank image on display panel
  • low battery voltage
1 beep for every second passed blank image on display panel
  • low battery voltage
2 short beeps any hexadecimal error code displayed on the display panel
  • refer to the hexadecimal error codes list for more details
2 short beeps blank image on display panel
  • malfunctioning or dead RAM module
  • dead motherboard

Beep Error Codes (Phoenix)

Beep signal Additional indicators Possible meanings
continuous beep blank image on display panel
  • dead motherboard
0 beeps cooling fan spins up
power-on LED status indicator is lit green or amber
  • unsupported or dead processor
  • malfunctioning or dead RAM module
  • dead motherboard
1 beep unreadable, garbled, blank or blinking
images on the display panel
  • loose or damaged display panel cable
  • malfunctioning or dead display panel inverter
  • malfunctioning or dead display panel backlight
  • malfunctioning display panel logic board
  • malfunctioning graphics chip
  • dead motherboard
1 beep "Unable to access boot source" is displayed
on the display panel
  • malfunctioning or dead boot device
  • malfunctioning or dead I/O controller
1 long beep and 2 short beeps blank image on display panel
  • unsupported, loose, or dead graphics chip
  • dead display panel logic board
  • dead motherboard
1 beep, 3 short beeps,
3 short beeps, and 1 beep
blank image on display panel
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
3 short beeps,
3 short beeps, and 1 beep
blank image on display panel
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
1 long beep and 4 short beeps blank image on display panel
  • low battery voltage
1 beep for every second passed blank image on display panel
  • low battery voltage
2 short beeps any hexadecimal error code displayed on the display panel
  • refer to the hexadecimal error codes list for more details
2 short beeps blank image on display panel
  • malfunctioning or dead RAM module
  • dead motherboard
4 short beeps, 4 short beeps
4 short beeps, and 4 short beeps
blank image on display panel
  • dead embedded security subsystem chip
5 short beeps blank image on display panel
  • dead motherboard

Beep Error Codes (AMI)

Beep signal Additional indicators Possible meanings
0 beeps cooling fan spins up
power-on LED status indicator is lit green or amber
  • unsupported or dead processor
  • malfunctioning or dead RAM module
  • dead motherboard
1 beep unreadable, garbled, blank or blinking
images on the display panel
  • loose or damaged display panel cable
  • malfunctioning or dead display panel inverter
  • malfunctioning or dead display panel backlight
  • malfunctioning display panel logic board
  • malfunctioning graphics chip
  • dead motherboard
1 long beep and 2 short beeps blank image on display panel
  • unsupported, loose, or dead graphics chip
  • dead display panel logic board
  • dead motherboard
1 beep, 3 short beeps,
3 short beeps, and 1 beep
blank image on display panel
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
3 short beeps,
3 short beeps, and 1 beep
blank image on display panel
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
2 short beeps any hexadecimal error code displayed on the display panel
  • refer to the hexadecimal error codes list for more details
2 short beeps blank image on display panel
  • malfunctioning or dead RAM module
  • dead motherboard
5 short beeps blank image on display panel
  • dead motherboard

Hexadecimal Error Codes (IBM)

Error code Error description Possible meanings
00101 Interrupt failure.
  • malfunctioning I/O controller
00102 Timer failure.
  • malfunctioning I/O controller
00103 Timer interrupt failure.
  • malfunctioning I/O controller
00104 Protected mode failure.
  • malfunctioning memory controller
00105 Last 8042 command not accepted.
  • malfunctioning PS/2 keyboard controller
00107 NMI test failure.
  • malfunctioning I/O controller
00108 Timer bus test failure
  • malfunctioning I/O controller
00109 Low meg-chip select test.
  • malfunctioning memory controller
00110 System board parity.
  • malfunctioning or dead RAM module
00111 I/O parity.
  • malfunctioning or dead attached docking station
00158 No hard disk password has been set even though the supervisor password is set.
  • self-explanatory, set a password for the hard disk drive
00159 The hard disk password is not set the same as the supervisor password.
  • self-explanatory, set a matching password for the hard disk drive
00161 Dead battery.
  • dead RTC battery
00163 Time and date were not set.
  • dead RTC battery
00173 Configuration data was lost.
  • dead RTC battery
00174 N/A
  • incorrect master and slave settings used for the hard disk drive
00175 EEPROM CRC #1 error.
  • malfunctioning or dead EEPROM chip
00177 Supervisor password check sum error.
  • malfunctioning or dead EEPROM chip
00178 EEPROM is not functional.
  • malfunctioning or dead EEPROM chip
00183 Incorrect password entered at the supervisor password prompt.
  • self-explanatory, wrong password
00184 Power-on password check sum error.
  • malfunctioning or dead EEPROM chip
00185 The startup sequence is not valid. Suspect that power was off when the startup sequence was being updated.
  • corrupted EEPROM chip
00188 BAD EEPROM CRC #1. An incorrect checksum of the EEPROM is received.
  • malfunctioning or dead EEPROM chip
00189 BAD EEPROM CRC #1. An incorrect checksum of the EEPROM is received.
  • malfunctioning or dead EEPROM chip
00190 A depleted battery pack was installed while the power was on.
  • self-explanatory, low-charge battery installed
00192 Fan error.
  • insufficient voltage being supplied by the RTC battery
  • disconnected cooling fan
  • loose or damaged cooling fan cable
  • malfunctioning or dead cooling fan
00193 RF Antenna has been removed.
  • self-explanatory, reattach the RF antenna back to its original location
00194 The computer is carried through the portal gate.
  • self-explanatory, enter the supervisor password
00195 The configuration read from the hibernation area does not match the actual configuration.
  • the system specifications have been changed without changing the hibernation file
00196 A read error occurred in the hibernation area of the hard disk drive.
  • corrupt or malfunctioning hard disk drive
00201 Memory data error.
  • malfunctioning or dead RAM module
00202 Memory line error 00–15.
  • malfunctioning or dead RAM module
00203 Memory line error 16–23.
  • malfunctioning or dead RAM module
00205 Memory test failure on on-board memory.
  • malfunctioning or dead soldered RAM
00221 ROM to RAM remap error.
  • malfunctioning or dead RAM module
  • corrupt or damaged BIOS chip
00225 Unsupported memory module.
  • incorrect type of RAM installed
  • malfunctioning or dead RAM module
00301 Keyboard error.
  • malfunctioning external keyboard
  • malfunctioning internal keyboard
00303 Keyboard error.
  • malfunctioning external keyboard
  • malfunctioning internal keyboard
00304 Keyboard error.
  • malfunctioning external keyboard
  • malfunctioning internal keyboard
00305 Keyboard error.
  • malfunctioning external keyboard
  • malfunctioning internal keyboard
00601 Diskette drive or controller error.
  • corrupted or damaged floppy disk
  • malfunctioning floppy disk drive
00602 Diskette read error.
  • corrupted or damaged floppy disk
  • malfunctioning floppy disk drive
00604 Unacceptable ID was read from the diskette drive.
  • malfunctioning floppy disk drive
01101 Serial_A test failure.
  • loose or damaged serial port cable
  • malfunctioning SuperIO chip
01201 Serial_B test failure.
  • malfunctioning IrDA controller
01701 Hard disk controller failure.
  • malfunctioning or dead hard disk drive
01780 Hard disk 0 error.
  • malfunctioning or dead hard disk drive
01781 Hard disk 1 error.
  • malfunctioning or dead hard disk drive
01790 Hard disk 0 error.
  • malfunctioning or dead hard disk drive
01791 Hard disk 1 error.
  • malfunctioning or dead hard disk drive
02401 System board video error.
  • malfunctioning graphics chip
  • malfunctioning VRAM
02402 N/A
  • malfunctioning or dead S-Video/TV-out card
08081 PC Card presence test failure. PC Card revision number also checked.
  • malfunctioning or dead PC card device
  • loose or damaged PC card slot
08082 PC Card register test failure.
  • malfunctioning or dead PC card device
  • loose or damaged PC card slot
08601 System bus error–8042 mouse interface.
  • malfunctioning PS/2 mouse
08602 External mouse error.
  • malfunctioning PS/2 mouse
08603 System bus error or mouse error.
  • malfunctioning PS/2 mouse
  • malfunctioning PS/2 keyboard
08611 System bus error–I/F between 8042 and IPDC.
  • malfunctioning SuperIO chip
08612 TrackPoint error.
  • loose or damaged internal keyboard cable
08613 System board or TrackPoint error.
  • loose or damaged internal keyboard cable
  • malfunctioning SuperIO chip
191xx PM initialization error.
  • corrupted or damaged BIOS chip
199xx Resume error.
  • corrupted or damaged BIOS chip
I9990301 Hard disk error.
  • malfunctioning or dead hard disk drive
I9990302 Invalid hard disk boot record.
  • corrupted boot sector
I9990303 Bank–2 flash ROM check sum error.
  • corrupted or damaged BIOS chip
I9990305 No bootable device.
  • no bootloaders are detected

Hexadecimal Error Codes (Phoenix)

Error code Error description Possible meanings
N/A Device address conflict.
  • dead RTC battery
  • incorrectly configured device addresses
N/A Allocation error for device.
  • dead RTC battery
  • incorrectly configured device addresses
N/A Failing bits: xxxx.
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
N/A Invalid system configuration data.
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
N/A I/O device IRQ conflict.
  • dead RTC battery
  • incorrectly configured IRQ assignments
N/A Hibernation error.
  • a crappy software driver does not support hibernation
  • the hibernation file was not resized when the RAM capacity was changed
N/A Fan error.
  • disconnected cooling fan
  • loose or damaged cooling fan cable
  • malfunctioning or dead cooling fan
N/A Thermal sensing error.
  • the thermal sensor in the processor is not detected
  • overheating processor
N/A Cannot boot from any device.
  • no valid bootloader has been detected on the selected boot device
0175 Bad CRC1, stop POST task. The EEPROM checksum is not correct.
  • corrupted or damaged EEPROM chip
0176 System Security. The system has been tampered with.
  • dead RTC battery
0177 Bad SVP data, stop POST task.
  • corrupted or damaged EEPROM chip
0182 Bad CRC2. Enter BIOS Setup and load Setup Defaults.
  • dead RTC battery
0185 Bad startup sequence settings. Enter BIOS Setup and load setup defaults.
  • incorrect boot order set
  • dead RTC battery
0187 EAIA data access error. The access to EEPROM has failed.
  • dead EEPROM chip
0188 Invalid RFID serialization information area or bad CRC2. The EEPROM checksum is not correct.
  • corrupted or damaged EEPROM chip
  • malfunctioning ADP3421 voltage regulator, related to the blink of death
0189 Invalid RFID configuration information area. The EEPROM checksum is not correct.
  • corrupted or damaged EEPROM chip
0190 Critical low battery error.
  • low energy on battery
0191 System Security. Invalid Remote Change requested.
  • dead RTC battery
  • corrupted or damaged embedded security subsystem chip
0192 System Security. Embedded Security hardware tamper detected.
  • loose, corrupted, or damaged embedded security subsystem chip
0195 Security hardware tamper detected
  • loose, corrupted, or damaged embedded security subsystem chip
0196 Security hardware removed
  • loose or dead embedded security subsystem chip
0197 Invalid Remote change requested
  • remote configuration of the embedded security chip was unsuccessful
0199 System Security. Security password retry count exceeded.
  • too many unsuccessful password attempts were made
01C8 More than one modem devices are found. Remove one of them. Press ESC to continue.
  • self-explanatory, two modem DSPs are in the system
01C9 More than one Ethernet devices are found. Remove one of them. Press the Esc key to continue.
  • self-explanatory, two ethernet controllers are in the system
01CA More than one Wireless LAN devices are found. Remove one of them.
  • self-explanatory, two WLAN controllers are in the system
0200 Hard drive error. The hard drive is not working.
  • malfunctioning or dead hard disk drive
0210 Stuck Key xx
  • foreign particles trapped in key mechanism
  • malfunctioning keyboard
0220 Monitor type error. Monitor type does not match the one specified in CMOS.
  • self-explanatory, change the monitor type to CRT or LCD
    ...depending on the connected monitor
0230 Shadow RAM error. The shadow RAM failure at offset xxxx.
  • malfunctioning or dead RAM module
  • corrupted or damaged BIOS chip
0231 System RAM error. System RAM failure at offset xxxx.
  • malfunctioning or dead RAM module
0232 Extended RAM error. Extended RAM failure at offset xxxx.
  • malfunctioning or dead RAM module
0250 System battery error. System battery is dead.
  • dead RTC battery
0251 System CMOS checksum bad. Default configuration used.
  • dead RTC battery
0252 Password checksum bad. The password is cleared.
  • corrupted or damaged EEPROM chip
0260 System timer error
  • dead RTC battery
0270 Real time clock error
  • dead RTC battery
0271 Date and time error. Neither the date nor the time is set in the computer.
  • incorrect or absurd date and time settings
  • dead RTC battery
0280 Previous boot incomplete. Default configuration used.
  • nearly drained RTC battery
  • malfunctioning RAM module
02B2 Incorrect drive A type
  • malfunctioning floppy disk drive
  • loose or damaged floppy disk drive cable
  • loose or damaged port connected to the floppy disk drive
02D0 System cache error
  • malfunctioning cache SRAM in processor
02F0 CPU ID:xx Failed
  • unsupported or loose processor
  • one of the cores in the processor is malfunctioning
02F4 EISA CMOS not writable
  • corrupted or damaged EEPROM chip
  • dead RTC battery
  • malfunctioning or dead southbridge
02F5 DIMM test failure
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
02F6 Software NMI failure
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
02F7 Fail-safe timer NMI failure
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
1801 Attached docking station is not supported
  • the docking station has a feature that isn't supported by the system
1802 Unauthorized network card is plugged in. Power off and remove the Mini PCI network card.
  • installed WLAN card is not in the BIOS' whitelist
1803 Unauthorized daughter card is plugged in. Power off and remove the daughter card.
  • installed modem daughter card is not in the BIOS' whitelist
1804 Unauthorized WAN card is plugged in. Power off and remove the WAN card.
  • installed WWAN card is not in the BIOS' whitelist
1805 Unauthorized Wireless USB card is plugged in—Power off and remove the Wireless USB card.
  • installed WUSB card is not in the BIOS' whitelist
1810 Hard drive partition layout error
  • the Pre-Desktop Area partition is corrupt
1820 More than one external fingerprint reader is attached.
Power off and remove all but the reader that you set up within your main operating system.
  • self-explanatory, two fingerprint readers are in the system
1830 Invalid memory configuration - Power off and install a memory module to Slot-0 or the lower slot.
  • only one RAM module is installed, and it's installed in the 2nd RAM slot (incorrect)
  • loose or damaged RAM slot
2000 Hard Drive Active Protection sensor diagnostics failed. Press ESC to continue. Press F1 to enter SETUP.
  • excessive shock was applied to the accelerometer, re-run diagnostics to fix it
2010 Warning: Your internal hard drive (HD) may not function correctly on this system.
Ensure that your HD is supported on this system and that the latest HD firmware is installed.
  • hard disk drive does not support head parking
2100 Initialization error on HDD0 (Main hard drive)
  • malfunctioning or loose connection to hard disk drive
2102 Initialization error on HDD1 (Ultrabay hard drive)
  • malfunctioning or loose connection to hard disk drive
2110 Read error on HDD0 (Main hard drive)
  • malfunctioning hard disk drive
2112 Read error on HDD1 (Ultrabay hard drive)
  • malfunctioning hard disk drive

Hexadecimal Error Codes (AMI)

Error code Error description Possible meanings
N/A Device address conflict.
  • dead RTC battery
  • incorrectly configured device addresses
N/A Allocation error for device.
  • dead RTC battery
  • incorrectly configured device addresses
N/A Failing bits: xxxx.
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
N/A Invalid system configuration data.
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
N/A I/O device IRQ conflict.
  • dead RTC battery
  • incorrectly configured IRQ assignments
N/A Hibernation error.
  • a crappy software driver does not support hibernation
  • the hibernation file was not resized when the RAM capacity was changed
N/A Cannot boot from any device.
  • no valid bootloader has been detected on the selected boot device
1802 Unauthorized network card is plugged in - Power off and remove the miniPCI network card.
  • installed WLAN card is not in the BIOS' whitelist
1804 Unauthorized WAN card is plugged in - Power off and remove the WAN card.
  • installed WWAN card is not in the BIOS' whitelist
1805 Unauthorized Wireless USB card is plugged in - Power off and remove the Wireless USB card.
  • installed WUSB card is not in the BIOS' whitelist
1810 Fan Error.
  • disconnected cooling fan
  • loose or damaged cooling fan cable
  • malfunctioning or dead cooling fan
1811 Thermal sensing error.
  • the thermal sensor in the processor is not detected
  • overheated processor
7001 (HDCP) Memory is not enough for HDCP Key Provisioning!
  • no RAM module is installed
7002 (HDCP) Failed to check the key set Family-EKS!
  • corrupted or damaged HDCP controller
7003 (HDCP) Chip-Unique-EKS re-encryption failed!
  • corrupted or damaged HDCP controller
7004 (HDCP) Failed to check the key set Chip-Unique-EKS!
  • corrupted or damaged HDCP controller
7005 (HDCP) Cipher Initialization with Chip-Unique-EKS failed!
  • corrupted or damaged HDCP controller
8100 Gate20 Error
  • malfunctioning or dead RAM module
  • malfunctioning or damaged PS/2 keyboard controller
  • malfunctioning or damaged memory controller
8101 Multi-Bit ECC Error
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
8102 Parity Error
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
8103 RAM R/W test failed
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
8104 CMOS Memory Size Wrong
  • loose or damaged RAM slot
  • malfunctioning or dead RAM module
  • corrupted or damaged EEPROM chip
8200 Boot Failure ...
  • the selected boot device is malfunctioning or nearing death
8201 Invalid Boot Diskette
  • corrupted or damaged floppy disk
8202 Drive Not Ready
  • the optical drive has nothing in it
8203 A: Drive Error
  • loose or damaged floppy disk drive cable
  • malfunctioning or dead floppy disk drive
8204 B: Drive Error
  • loose or damaged floppy disk drive cable
  • malfunctioning or dead floppy disk drive
8205 Insert BOOT diskette in A:
  • corrupted or damaged floppy disk
8206 Reboot and Select proper Boot device or Insert Boot Media in selected Boot device
  • selected boot device is malfunctioning or couldn't be read
8207 NO ROM BASIC
  • a bootable MS-DOS active partition wasn't found
8318 S.M.A.R.T. Capable but Command Failed
  • loose or damaged SATA connector
  • malfunctioning hard disk drive
  • malfunctioning I/O controller
8319 S.M.A.R.T. Command Failed
  • loose or damaged SATA connector
  • malfunctioning hard disk drive
  • malfunctioning I/O controller
831A S.M.A.R.T. Status BAD, Backup and Replace
  • malfunctioning hard disk drive
  • malfunctioning I/O controller
831B S.M.A.R.T. Capable and Status BAD
  • loose or damaged SATA connector
  • malfunctioning hard disk drive
  • malfunctioning I/O controller
8400 BootSector Write !!
  • a virus has written something to the boot sector
8401 VIRUS: Continue (Y/N)?
  • a virus has been detected on the system
8500 DMA-1 Error
  • malfunctioning or dead hard disk drive
  • malfunctioning or dead RAM module
  • malfunctioning memory controller
8501 DMA-2 Error
  • malfunctioning or dead hard disk drive
  • malfunctioning or dead RAM module
  • malfunctioning memory controller
8502 DMA Controller Error
  • malfunctioning memory controller
8503 Checking NVRAM..Update Failed
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8504 Microcode Error
  • missing or outdated processor microcode
8505 NVRAM Checksum Bad, NVRAM Cleared
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8506 Resource Conflict
  • incorrectly configured device addresses
8507 NVRAM Ignored
  • PnP data for PnP-compliant devices is not being used
8508 NVRAM Bad
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8509 Static Resource Conflict
  • incorrectly configured device addresses
850A PCI I/O conflict
  • incorrectly configured device addresses
850B PCI ROM conflict
  • wrongly allocated PCI option ROMs
850C PCI IRQ conflict
  • incorrectly configured IRQ assignments
850D PCI IRQ routing table error
  • outdated IRQ routing table
850E Timer Error
  • malfunctioning I/O controller
850F Refresh timer test failed
  • malfunctioning I/O controller
8510 Interrupt Controller-1 error
  • malfunctioning memory controller
8511 Interrupt Controller-2 error
  • malfunctioning memory controller
8600 CMOS Date/Time Not Set
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8601 CMOS Battery Low
  • nearly dead RTC battery
8602 CMOS Settings Wrong
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8603 CMOS Checksum Bad
  • dead RTC battery
  • corrupted or damaged EEPROM chip
8700 KBC BAT Test failed
  • malfunctioning keyboard controller
8701 Keyboard Error
  • disconnected or malfunctioning keyboard
8702 PS2 Keyboard not found
  • no PS/2 keyboard is detected
8703 PS2 Mouse not found
  • no PS/2 mouse is detected
8704 Keyboard/Interface Error
  • malfunctioning keyboard controller
8705 Unlock keyboard
  • damaged keyboard
  • malfunctioning keyboard controller
8706 System Halted
  • unknown fatal error occurred
8707 [INS] Pressed
  • self-explanatory, the insert key was depressed during the POST sequence

...which would result in the BIOS settings being reset to factory defaults

8708 Password check failed
  • dead RTC battery
  • the password that has been entered does not match the password set in the BIOS settings
870A Unknown BIOS error. Error code = 004Bh
  • corrupted or damaged BIOS chip
870B Floppy Controller Failure
  • malfunctioning floppy disk drive
8800 Warning! Unsupported USB device found and disabled!
  • a non-bootable USB device was detected and disabled
8801 Warning! Port 60h/64h emulation is not supported by this USB Host Controller!
  • self-explanatory, the USB controller doesn't support this type of emulation
8802 Warning! EHCI controller disabled. It requires 64bit data support in the BIOS.
  • outdated data structure in the BIOS
8900 Not enough space in Runtime area!! SMBIOS data will not be available
  • corrupt or incorrect SMBIOS data
8A00 Warning! This system board does not support the power requirements of the installed processor.
The processor will be run at a reduced frequency, which will impact system performance
  • unsupported or damaged processor
  • malfunctioning or damaged VRM
8B00 Insufficient Runtime space for MPS data! System may operate in PIC or Non-MPS mode.
  • corrupted or damaged BIOS chip