Browse all support articles inside POST Error Codes.
Code Meaning 00 Flag test 03 Register test 06 System hardware initialisation 09 BIOS ROM checksum 0C Page register test 0F 8254 timer test 12 Memory refresh initialisation 15 8237 DMA controller test 18 8237 DMA...
Code Meaning 01 NMI disabled & 286 reg. test about to start 02 286 register test over 03 ROM checksum OK 04 8259 initialization OK 05 CMOS pending interrupt disabled 06 Video disabled & system timer counting OK 07 CH-2...
Code Meaning 01 Processor register test about to start; disable NMI next. 02 NMI is Disabled. Power on delay starting. 03 Power on delay complete (to check soft reset/power-on). 05 Soft reset/power-on determined, going...
Code Meaning C0 1.Turn off OEM specific cache, shadow 2.Initialize standard devices with default values: DMA controller (8237) Programmable Interrupt Controller (8259) Programmable Interval Timer (8254) RTC chip C1 Auto...
CFh Test CMOS read/write functionality C0h Early chipset initialization: Disable shadow RAM, L2 cache (socket 7 and below), program basic chipset registers C1h Detect memory: Auto detection of DRAM size, type and ECC...
Code Meaning 00 Initialize flags, MSW,IDTLIN 01 Read manufacturing jumper 02 8042 received read command 03 No response from 8042 04 Look for ROM at E000 05 Look for ROM at C800 06 Normal CMOS reset code 08 Initialize...
Code Meaning 01 CPU register test in progress 02 CMOS read/write test failed 03 BIOS ROM checksum bad 04 8254 programmable interrupt controller failed 05 DMA controller initialization failed 06 DMA page-register test...
Code Meaning 02 Verify real mode 03 Disable NMI 04 Get processor type 06 Initialize system hardware 08 Initialize chipset with POST values 09 Set IN-POST flags 0A Initialize CPU registers 0B Enable CPU registers 0C...
Code Meaning 01 LED test 02 Processor test 03 System (BIOS) ROM test 04 RAM refresh timer test 05 Interrupt RAM test 06 Shadow the system ROM BIOS 07 CMOS RAM test 08 Internal cache memory test 09 Initialize the video...
Code Meaning 000F 80286 CPU is bad 0010 Bad checksum on ROM 0 0011 Bad checksum on ROM 1 011X One of the RTC registers is bad; Register = x(0-D) 0120 RTC failed to tick 0240 CMOS/RTC has lost power 0241 Invalid checksum...
Code Meaning 000F 386 CPU bad 0010 Bad checksum on ROM 0 0011 Bad checksum on ROM 1 011X RTC register is bad 0120 RTC failed to tick 0240 CMOS/RTC lost power 0241 Invalid checksum, IBM CMOS area 0280 Invalid checksum, HP...
Code Meaning 01 CPU flag and register tested 02 BIOS ROM checksum tested 03 CMOS shutdown byte 0F tested 04 8254 PIT channel 0 tested 05 8254 PIT channel 1 tested 06 8237 DMA initialize registers test 0 07 8237 DMA...
Code Meaning 00 CPU tested with patter FFAA0055 01 CPU 32 register tested 02 BIOS ROM checksum tested 03 System port 94 enabled and checked 04 POST registers, port 102 enabled and checked 05 POST registers port 96...
Uncompressed INIT Code Checkpoints: Code Meaning D0 NMI is Disabled. Onboard KBC, RTC enabled (if present). Init code Checksum verification starting D1 Keyboard controller BAT test, CPU ID saved, and going to 4GB flat...
Uncompressed INIT Code Checkpoints: Code Meaning D0 NMI is disabled. Onboard keyboard controller and real time clock enabled (if present). Initialization code checksum verification starting D1 Keyboard controller BAT...
Code Meaning D0 NMI is disabled. Onboard keyboard controller and real time clock enabled (if present). Initialization code checksum verification starting D1 Keyboard controller BAT test, CPU ID saved, and going to 4GB...
Code Meaning D0 NMI is Disabled. Onboard KBC, RTC enabled (if present). Init code Checksum verification starting. D1 Keyboard controller BAT test, CPU ID saved, and going to 4 GB flat mode. D3 Do necessary chipset...
Code Meaning D0 NMI is Disabled. Onboard KBC, RTC enabled (if present). Init code Checksum verification starting. D1 Keyboard controller BAT test, CPU ID saved, and going to 4 GB flat mode. D3 Do necessary chipset...
Code Meaning D0 NMI is Disabled. Onboard KBC, RTC enabled (if present). Init code Checksum verification starting. D1 Keyboard controller BAT test, CPU ID saved, and going to 4 GB flat mode. D3 Do necessary chipset...
Code Meaning D0 NMI IS DISABLED. ONBOARD KBC, RTC ENABLED (IF PRESENT). INIT CODE CHECKSUM VERIFICATION STARTING. D1 KEYBOARD CONTROLLER BAT TEST, CPU ID SAVED, AND GOING TO 4 GB FLAT MODE D3 DO NECESSARY CHIPSET...
Code Meaning RANGE CATEGORY/SUBSYSTEM 00-0F DEBUG CODES: CAN BE USED BY ANY PEIM/DRIVER FOR DEBUG 10-1F HOST PROCESSOR:1F IS AN UNRECOVERERABLE CPU ERROR 20-2F MEMORY/CHIPSET: 2F IS NO MEMORY DETECTED OR NO USEFUL ...
POST Code Ranges Range Category / Subsystems 00 - 0F Debug codes: Can be used by any PEIM / driver for debug 10 - 1F Host Processors: 1F is an unrecoverable CPU error 20 - 2F Memory / Chipset: 2F is no memory detected...
POST Code Ranges Range Category / Subsystems 00 - 0F Debug codes: Can be used by any PEIM / driver for debug 10 - 1F Host Processors: 1F is an unrecoverable CPU error 20 - 2F Memory / Chipset: 2F is no memory detected...
POST Code Ranges Range Category / Subsystems 00 - 0F Debug codes: Can be used by any PEIM / driver for debug 10 - 1F Host Processors: 1F is an unrecoverable CPU error 20 - 2F Memory / Chipset: 2F is no memory detected...
POST Code Range Range Category / Subsystems 00 - 0F Debug codes: Can be used by any PEIM / driver for debug 10 - 1F Host Processors: 1F is an unrecoverable CPU error 20 - 2F Memory / Chipset: 2F is no memory detected or...
Code Meaning 02 Verify real mode 03 Disable non-maskable interrupt (NMI) 04 Get CPU type 06 Initialize system hardware 07 Disable shadow and execute code from the ROM 08 Initialize chipset with initial POST values 09 Set...
Code Meaning 02 Verify real mode 04 Get 06 Initialize 08 Initialize with initial POST values 09 Set flag 0A Initialize 0C Initialize initial POST values 0E Initialize O 10 Initialize management 11 Load with initial POST...
