I just bought a external enclosure online and my friend just gave me his old working harddrive out of his hp computer. I put the harddrive into the external enclosure which connects to the hard drive via ide and uses usb to connect to the computer. When I power on the external harddrive and plug it into my computer I hear a sound which is when you plug a usb in you will hear it, but when I look around My Computer I don't see the new drive. I'm wondering is this a problem with my external enclosure or I have to do something with the harddrive first.