You cannot upgrade Windows XP Pro to Vista Home Premium using upgrade media
directly. You need to perform a clean install. Refer to my post 'Clean
Windows Vista Using Upgrade Media', also in this newsgroup, for detailed
instructions on how to do this.
> I was using Windows XP professional edition and tried to install vista home
> premium. After installation, the computer keeps restarting instantly. Right
> after the POST the computer would restart again.
> 1.5 Gig RAM
> 3.2 Pentium D 940
> Nvidia 7600 gt
> 200gb HD