i made a lot of changes for booting from the cd but when im trying to install it on my hard driver it cannot find the windows 7 os and the choices i have is to "erase disk" after i made a backup of my system i selected erase disk then it needs somethng like boot file i dont remember exactly and after all it cannot get installed with error message something like "it cannot find how to get installed" any help would be grateful my motherboard is p67a-gd55 i have 2600k intel i7 processor and sata iii hard driver