You may have a bad burn on your ISO. Check the following:
◦Download image again
◦Verify hash after download
◦Use a download utility to ensure integrity of file
◦Burn image again
◦Burn image at a slower rate
◦Burn image using different software
◦Burn image using different drive/PC
Will the server boot on any media? If not, you may have a bad CD-ROM.
Regards,