So I have a hard drive(toshiba) that was taken from my brother's old computer. Windows 8 is already installed on it im just trying to replace my old hard drive with it(dell desktop with all original parts), it says in my bios that its there, and I set my 1st boot priority to hard disk, when I save and exit it just gives be a black screen with a blinking text bar in the top left corner. Please somebody I need to get this done