I'd try a different CD. It sounds like either the CD or the drive has a problem. When's the last time the drive was cleaned?
i prepared the PC to boot from cd as the first priority but when press any key to boot from cd it stop for about 5 minutes and start the windows installed or it hangs although i tested this cd on another computer and it worked and i used another cd on my PC and it worked so did i do something wrong
sorry about my English