OK, though I knew what I was doing when I told the thing to do a safe boot. Apparently, I either hit the wrong button or things have changed since I last used this function. Anyway, I only get a cmd prompt, which I've managed to get to where I can see the System32 file in gui, but not sure what to do to restore the desktop (the directory of system32 is about half a mile long and I can't peruse the whole thing). HELP!