hi i got an hp a1130n its an amd 64 3500+ and it cames with media center i will like to put an xp pro x64 but once that i finish insallin it and the computer turn on for the firs time my monitor shuts down do i have to bay a vide card or need some drivers by the way i have an ati radeon 200 express that comes whith the computer and its atached on the motherboard