PXE-M0F: Exiting PXE ROM

PXE Boot aborted. Booting to next device...
PXE-M0F: Exiting PXE ROM.
No bootable device -- insert boot disk and press any key

My situation is:

• deploying OS to the laptop with external usb-c to RJ45 adapter
• system center configuration manager 2012 R2
• deploying operating system to "Unknown Computers" collection

Reason why this happen:

• SCCM assinged usb-c to RJ45 adapter to computer object
• New PXE boot instance recognize MAC address of external usb-c to RJ45 adapter and do not let to deploy OS in this case

Solution:

• Delete last computer object from SCCM console