We checked all the hardware and it is OK.
the problem is in the boot information on the boot drive
I can boot from the Install DVD and go into rescue mode and see the data on the boot disk in the /mnt/sysimage folder.
this fixed my problem
GRUB loader lost - how to reactivate it?
http://www.techspot.com/vb/all/windows/t-87085-GRUB-loader-lost--how-to-reactivate-it.html
grub
Then in GRUB's command line:
root (hd0,0) - this tells GRUB that the boot partition is the first one on the first disk
setup (hd0) - this writes the boot sector on the first disk
quit - guess what this does
Then exit to reboot.
research
Rescue Mode and Reinstalling Grub
http://dailypackage.fedorabook.com/index.php?/archives/158-System-Recovery-Week-Rescue-Mode-and-Reinstalling-Grub.html
GRUB loader lost - how to reactivate it?
http://www.techspot.com/vb/all/windows/t-87085-GRUB-loader-lost--how-to-reactivate-it.html