i have fresh and clean win 7 cd, and that not allow me start setup, that say ''operating system not found, please press ctrl,alt,del to restart pc'' or other message that something not found or covered by iso standart patents.i formated everything,fully all partitions.i tried request on toshiba but there i got answer after i entered serial number that there they got nothing for me or my laptop to old )) its a satellite c660. i got sony other lapton even i formated everything i still can install everything i want, why Toshiba so creepy?haha yes free os installed open suse working well, but i want instal win, and i got clean original version of win 7, before there were vista win
You need to enter BIOS settings on your laptop, and change boot options so that DVD is first in the list.
And check your "cleen original version of Win 7" that it is really bootable DVD, not ISO file.