Hello, I bought a new HP desktop and had some trouble. I was told to remove everything and start over...I did what they said but forgot that my external hard drive was connected. Now my HD does not show up anywhere. It lights up, it makes the little noise...but I cant find it. i've done some of the checks that were listed. But nothing. Did I wreck the HD, or does it need to be loaded up again. I did not set it up in the first place to do not have any idea how to do this.