Error Codes and Beep Codes

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

Hexadecimal Error Codes

Error code	Error description	Possible meanings
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
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
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
1810	Hard drive partition layout error	the Predesktop 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
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

Beep Error Codes

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