I got rid of everything suggested, except AppNHost. It's part of Click&Clean which I use in Chrome. I originally uninstalled everything suggested and when I restarted my pc, it went no further than the lock screen. No matter how many times I hit a key on my keyboard the login screen wouldn't show up. I had to run system restore to restore my pc to before I remove Divx Player.
I just re-uninstalled everything one at a time with a restart after each.
Now the pc is o.k., other than no Cortana still.