I think I have a virus on my external hard drive. I recently loaded my hard drive with a whole bunch of music files from a friend and ever since then I've had problems. When I connect my hard drive and my mp3 into the computer to transfer files to the mp3, the folders within my hard drive won't open, and if they do manage to open and I try to transfer to the mp3 device, the transfer starts and then freezes and then I can not close the transfer window. Help!