I opened my case yesterday and today my hard drive will not boot. I tried re-plugging all of the plugs and still it will not book. I have windows XP with a DVD and CD rom with 1 hard drive. I only opened the case to try to install secondary hard drive but I needed another part so I did nothing. What should I do to get the hard drive to boot up. The CD and DVD room boot up and work, but the hard drive does not boot up.