1, Copy folder $WINDOWS.~BT to your VISTA Partition and reboot. *.If it not works then boot to XP and: a, Open boot.ini (Right click on My Computer--->Properties----->advanced---->Startup and Recovery--->Settings----->Edit. You will see something like this: [boot loader] timeout=15 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS-------->change the partition number to exactly where you want to install Vista. [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect C:\ = "Microsoft Windows" multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows Long Horn setup" ........----->Change the partition number like above. b, Save it and reboot.