I have windows vista OS. If I try to install windows xp I am getting following error. 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. Can somebody tell how to fix such type of problem. Please help.