Ah, Windows Vista. Amongst all the versions of Microsoft Windows, this particular operating system was designed far more for looks than actual function. Windows Vista offers limited ability for the users to customize programs and files.
However, if you are having trouble booting up your computer there is a way to hack it and make it work again. Check out this video to learn how to use the Bootrec.exe utility to correct startup issues. The Bootrec.exe tool is located in the Windows Recovery Environment (Windows RE).