BIOS POST Codes - Page 4 of 6
Code | LED Display | Description |
60h | ![]() |
The DMA page register test passed. About to verify from display memory. |
61h | ![]() |
The display memory verification test is done. About to perform the DMA Controller 1 base register test. |
62h | ![]() |
The DMA Controller 1 base register test passed. Performing the DMA Controller 2 base register test next. |
63h | ![]() |
The DMA Controller 2 base register test passed. Performing the BIOS ROM data area check next. |
64h | ![]() |
The BIOS ROM data area check is partially done. The BIOS ROM data area check is completed next. |
65h | ![]() |
The BIOS ROM data area check is done. Programming the DMA Controllers 1 and 2 next. |
66h | ![]() |
DMA Controller 1 and 2 programming was completed. Initializing the 8259 interrupt controller next. |
67h | ![]() |
The 8259 initialization is done. Starting the keyboard test next. |
80h | ![]() |
The keyboard test has started. Issuing the keyboard reset command next and clearing the output buffer. |
81h | ![]() |
The keyboard reset command completed successfully. Next, checking the stuck keys and issuing the interface test command if there was an error. |
82h | ![]() |
The keyboard controller interface test is done. About to write a command byte and initialize the circular buffer. |
83h | ![]() |
The command byte has been written and the global data initialization is done. About to check for locked keys. |
84h | ![]() |
Lock key checking is done. About to check for a memory size mismatch with CMOS RAM data. |
85h | ![]() |
The memory size check has been completed. About to display a soft error and check for password or bypass Setup. |
86h | ![]() |
The password has been checked. About to do programming before Setup. |
87h | ![]() |
The programming before Setup has been completed. Calling the BIOS Setup program next. |
88h | ![]() |
Returned from the BIOS Setup program and cleared the screen. Programming after Setup. |
89h | ![]() |
The programming after Setup is completed. Displaying the Power-On screen message next. |
8Ah | ![]() |
The first screen message has been displayed. About to display the OWait...O message. |
8Bh | ![]() |
The OWait...O message has been displayed. About to perform system and video BIOS shadowing. |
8Ch | ![]() |
System and video BIOS shadowing was successful. About to perform Setup options programming after Standard CMOS Setup. |
8Dh | ![]() |
The Setup options are programmed. The mouse check and initialization is done next. |
8Eh | ![]() |
The mouse check and initialization is done. Checking the floppy disk next. |
8Fh | ![]() |
The floppy disk check indicated that the floppy drive needs to be initialized. Floppy drive configuration is next. |
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