I have some systems, that no matter what I do, they will not boot from the Onboard NIC. I hit F12, and checked the BIOS, and I see that it is at Version A16. I also saw that UEFI was enabled, I have disabled that and made everything Legacy. No matter what I do, I cannot get many of these systems to boot off of the OnBoard NIC. We are using SCCM, and some systems DO work, but for the most part I have to end up running an image from bootable CD and External HD. PXE is enabled.