try booting the ISO's and the CD's on a virtual machine such as virtualbox
http://www.virtualbox.org/wiki/Downloads , to check if the ISOs are bootable & if the cds were burned alright , also try burnning with imgburn http://www.imgburn.com/index.php?act=download

run nero cd-dvd speed and do the benchmark test on each of the cds , also do the disc quality test if your burner supports it , take screenshots and upload to http://tinypic.com