@george1421 Thanks a lot for your answer.
Yes of course i m using my own DHCP server but that’s my mate who had put the settings into it.
So i dont know where looking for these.
But i find it i change the settings as you tell.
Now i got a new error message : “IPXE initialising devices …ok”
but hen it come to “Configuring (net0 -adressemac- …
But the dhcp server works because he said to the computer what server is needed for the PXE server.
An idea ?