problem with installation windows vista 5200 rc?

>
>
> hello when i install your system vista 5200 rc in setup he wrote me
> something like this
> windows vista windows could not prepare the computer to boot into the
> next
> phase of installation. to install windows' restart the installation
>
> look i install from system xp and i try out from the boot and in the boot
> he
> wrote me latter the messege
>
> what to do?
>
>