I have a Dell 8400, with Xp. It was purchassed in 2006. I was having lock up problems and was told by Best Buy that my OS was bad and needed to be reinstalled.
I formated my hard using the CD that came with the computer and reinstalled windows.
Now the computer locks up when the Windows XP flashed on the screen. I ran the a test of the devices and got the Message IDE device failed, Blank media or no media is present in Optical device