Lenovo T400 and UEFI PXE Boot

Hi 

I have problem with booting throught network on T440.

As I scan network with wireshark there is no packet sending from T440.

Another computers in same network is working fine and boot througt PXE.

I have last BIOS.

I have set Secure boot and UEFI Only.

On screen is just Starting PXE IPv4 and after some time Starting PXE IPv6 and this is all.

Help