I found an old hard drive in a suitcase. It belonged to my old Compaq computer. It is seven years old. Quamtun Bigfoot 6.5 Gb. It was the main hard drive in that computer. I tried to install it in my new Compaa, which is also a Pressario, but only a year old. It is in the second ide drive as the slave. The computer just hangs. I see the message detecting ide drives on the screen, but that's about it. The hard drive disk is not rotating. I just see a diode light on the HD. Nothing more. Cables are well connected, so are the wires, so that's not the problem. What's going on? I even smacked the hard drive, and the problem continues.