Instructing keyboard controller to run Self Test (PS2 only) (On a 7-segment LED display, the 'b' looks like a 6). If you see a POST code in this range, it should be read as B0 - BF. There are currently no valid POST codes in the 60 - 6F range. I/O Busses (PCI, USB, ISA, ATA, and so on.) Handing off control to the recovery capsule No memory detected or no useful memory detectedĬrisis Recovery has initiated per User requestĬrisis Recovery has initiated by software (corrupt flash) Programming timing parameters in the memory controller and the DIMMs Starting Application processor initialization Host processor Cache initialization (including APs) Power-on initialization of the host processor (Boot Strap Processor) POST Codeĭebug Codes: can be used by any PEIM/driver for debug This code can be used to find out why the error occurred. If the POST fails, the last POST code generated is left at port 80h. Be sure to first backup the data on the drive.ĭuring the Power-On Self Test (POST), the BIOS sends progress codes (POST codes) to I/O port 80h.You may need to perform a Windows Recovery or install a fresh copy of Windows.The installed drive was moved from a different computer.The Intel NUC didn't find a bootable drive. If no memory was removed, the memory might be bad. Memory size has decreased since the last boot. Press F2 during boot to enter BIOS Setup.Try the following:ĭownload and install the latest BIOS version for your Intel NUC.

In the tables below, POST codes and range values are in hexadecimal. This document defines the error messages and POST codes that could be seen when starting an Intel® NUC.

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