ipxe does not boot on a Realtek PCIe GBE

[Steph01]

Id of the device is PCI\VEN_8086&DEV_3B50&SUBSYS_83831043&REV_05\3&11583659&0&E7

undionly.kpxe hangs at "initialization of the device..." message or kind of message, ipxe.pxe works.

After I patched all 3 .wim (PE, boot and install), Windows 10 did begin to install on SAN but after reboot it does an "inaccessible boot device" error I could not solve so I gave up with this spywareOS and did same with Windows 7 which did install properly on SAN.
By the way, any of Win7, 8 or 10 all require .wim patching to add latest version of LAN drivers to be able to install them on a SAN device on various PC I did try with different NIC or they all end up with a "signature of xxx.sys does not match..." error or "inaccessible boot device" after the first reboot but this is nothing related with iPXE.