Thank you for the reply, flashing the firmware did not fix the issue in this case. It turns out that I had to disable 64-bit BAR (Base Address Register) addressing on the card using the Intel Ethernet Flash Firmware Utility with the -64d option.
Hello, we are installing new NIC's on our PowerEdge C6145 servers and when we attempt to PXE boot the servers we receive the following error: PXE-EC8: !PXE structure was not found in UNDI driver code segment.   The cards we are attempting to use are Intel Ethernet Converged Network Adapter X540-T1 ([URL]   Any ideas on what could be causing this?   Thank you
PowerEdge C6145 PXE Boot Error