I just bought a WD Portable Elements 2TB external hard drive, but it doesn’t work. I have a PC and I’m using Windows 7. When I plug the HD in on the USB slot, it appears in “My Computer”, is assigned a letter, etc. When I open the hard drive, I can even see the files that Western Digital apparently put there: readme.pdf, autorun, etc. But I can’t seem to open any of those files and, when I try to copy a file on the hard drive, Windows says that it cannot be found. When I try to format it, it says that an application is currently using it (which as far as I can tell is not the case). When I ask Windows to format it anyway, it tells me that it failed. Any idea what my problem could be?