UEFI BIOS, or rather one of the components called Boot Guard
So, Intel Boot Guard – hardware-supported UEFI BIOS authentication technology, it works as a trusted boot chain. And the first link in it the boot code inside the CPU that is triggered by the RESET event. CPU is on the SPI flash memory developed and signed by Intel code the module loads to its cache, verifies and runs.
This code module is responsible for the verification of a small start part of the UEFI BIOS Initial Boot Block, which in turn contains functionality for verification of the main part of UEFI BIOS. Thus, Intel BG allows you to verify the authenticity of the BIOS before booting the OS
Next, go to a simpler language, Utility, hash key OEM is written to the processor itself, although this utility may not be running.
Boot Guard has 6 0-5 configuration profiles
If the UEFI BIOS profile is set to 0 (this is usually nonami, Acer and ASUS and not all) then the CPU will work on any Board
If the UEFI BIOS profile is set higher than or equal to 1 (this usually Acer, HP and Nanami) I can not guarantee that the processor will work on any Board.
If the UEFI BIOS profile is set to 3-4 (and it is Lenovo, Dell, etc. Msii branded) that there is a high probability that the processor will only work on the platform, with similar where is the CPU
The processor with the profile 5 refused to work on the same, absolutely identical Board
This is true only if the device was running a utility for writing code to the hub
If the utility has not been started, the processor is "clean", but less and less devices where this utility is not run by the manufacturer.
Then make your own conclusions, infa minimal, I was asked to remove 3/4 of the material and I left only a stub, for General information.
BEFORE you PULL PROTS FROM the BOARD, take the time to drain the UEFI BIOS and check the Boot Guard profile configuration
0 No_FVME Intel BG technology off
1 VE VB mode on, timeout off (from 1 minute to 30 min)
2. both are activated (VB and MB), shutdown by timeout (from 1 minute to 30 minutes)
3 VM both modes are enabled, without shutting down the system
4 FVE VB mode enabled, immediate shutdown
5 FVME both are activated, instant off