[cobbler] unable to see cobbler pxe menu

Hi List, I dont know if anyone has posted this before., but I setted up a cobbler server on CentOS65 and the command cobbler check gives no error. created a distro,profile and added a system but when I network boot the system to be installed it goes to this balck screen where it shows the client ip, dhcp /cobbler server ip MAC address of client machine and wait there without proceeding forward. At this point I dont know how to troubleshoot , what is wrong with my configuration to see that menu screen,where I can select my profile. Any help is highly appreciated. Best Regards Sahibzada .Z. Ahmad System Administrator