A couple years ago, I came across an odd virus while working on a desktop for a friend. It was running Windows XP 64 bit edition. When I booted it up, it came up to warning about suicide and that it's bad and no way to get out of it. I thought it was called something like "suicide prevention virus". A Google search comes up with nothing. The only thing I could think of was to reformat the hard drive with Windows 7.