media test failure, check cable.
That means it is trying to boot from the network and not the CD (or the CD is not bootable). Make sure the PC has the CD/DVD above the hard drive in the boot order (the network boot which is what PXE is trying to do should be the last option in the Boot Order. Usually you can change this in the BIOS/CMOS setup but some PC's have a separate F key to adjust the boot order. When you made the CD, did you use the BurnToCD.cmd or did you just copy it to the CD? Copying will not work.