Its simple - keep the off button pressed and your Note should turn off. I said that in my post.
If you are having the same problem as I was, follow the steps I took in my "success" post. Might work for you.
Follow everything I did, don't think that a step is not necessary. Since every PC setup is different, it helps to reduce the possible causes by performing a clean start (reboot), disconnect internet, drop your defences, and I think key, connect to a rear USB port, not a USB port on the front. Also, don't use an extension USB cable either.