Same as I said before. Something is wrong, but you don't seem likely to tell me what it is.

You clearly have a working computer, since you burnt the disc in it. Can THAT computer boot the CD?

Did you confirm the md5 checksum of the ISO file? Did you burn at low speed?

I know nothing about the computer that is failing. What make and model is it, what vintage, and so on? Is it even a PC and not a Mac or a Commodore 64? Did you go into the BIOS setup and make sure that it is trying to boot from the CD before the hard disk? Does it even have that option? Are there more than one disc drive and are you using the primary one (the one that is master, assuming they are IDE drives and not SATA drives)?

Did you read the downloading FAQ? When we have had problems in the past with someone not being able to get a new CD to boot we've updated the FAQ to include what we have learned, so you either have a completely new problem or it should be covered somewhere in the FAQ.

Do you know that the optical drive in the system that you are trying to boot is functional? That seems like the most likely point of failure if all of my other concerns have been addressed.