Hi, i bought a external hard drive and really wanted to have windows on it, so i installed windows 7 with some program, ok the problem is when i start the windows just dont boot, just appears a black screen with a blicking cursor, i think it is because mbr or boot are damaged because i removed ubunto and grub recently and i fixed it with partition wizard, i eard too i can repair this with windows re but it dont work on external hard drives, is some way to use bootrec or re without windows re, plz i really need this