Hi, do you have the Vista OS disk? If so run a repair
http://www.bleepingcomputer.com/tuto...torial148.html Did you try Last Good Known Configuratipon?
If not you have two options. 1) you will need another PC to create a boot disk
http://ubcd4win.com/howto.htm this can be a Vista or XP cd. All this will do is allow you to get to your important docs ect to get them copied to another media.
2) take out the hard drive an place in in another PC to get the data off.
To get Vista to work again you will have to ahve a Vista OS disk.