I have a 300mhz computer and everytime I go to boot up the computer doesn't boot, it just sits there and the hd light stays red. No movement what so ever, the ide cables are installed properly and so is the jumpers. There is power to the hd. Sometimes when I shake the computer or take the hard drive out and put it back in it boots. Does anyone know what the matter is with the hd? Or is it the Hd?