after initiating PXEstart.ncf and the nlm load I have a server that won't respond to the requests. Started pxe service on another box and the workstation gets the dhcp and the proxy IP works no problem. On the box that doesn't work replace the nlm's tftp, pdhcp, zenpxe and dts from the box that does work. Go into tcpcon and check udp port 4011 and 69. Then use a tool to see if port 69 is active and it is. Totally stumped whats the problem here, it just stopped working.