hey there i really need help. i helped a friend to re-install windows. he had windows Xp and i installed my win7 pro. first it failed to install when its already halfway. then at next startup i got message that say ''failed to read disk, press ctrl, alt & dlt to restart''. how can i fix this? i even tried every setting in the bios menu, i tried changing cabled in pc but nothing works contact me on my email please. phillip.vanzyl2.5@gmail.com