I bought a new laptop with Windows Vista Home Premium OS bundled in it and i want to downgrade to XP Pro. I inserted my Win XP installer and could not install it. The error message is "Setup did not find any hard disk drives installed in your computer. Make sure any hard disk drives are powered on and properly connected to your computer, and that any disk-related hardware configuration is correct. This may involve running a manufacturer-supplied diagnostic or setup program.Setup cannot continue. To quit setup, press F3."How do i go about it to be able to successfully install Win XP?