We are running into a similar issue, trying to PXE boot and pick up a image deployment from our SCCM configuration manager.
- Intel(R) Ethernet Connection (2) I219-LM
- version 12.13.17.6
- Lenovo Thinkcentre M900
- Currently has Win 7 Pro installed....deploying a Win 7 enterprise build. (I have an Ethernet connection when booting into the original OS).
The BIOS is set to primary PXE. Secure boot disabled.
On boot, the network link light shows connection (orange and amber), then indicates "Initializing and establishing link" then the network turns itself off and then indicates "Error PXE-E61: media test failure, check cable"
Every once in awhile if we restart quickly it might actually connect, but that's not stable enough for our needs.