If you opt to use NTPASSWD, don't complain to me about data loss or how hard it is. I don't offer it or support it.
-> If you just need to backup your files the common methods are:
1. Add a new boot drive, install Windows, then add the old drive and copy off the files.
2. KNOPPIX and K3b. If you ask what KNOPPIX is, I will not answer. Why? You must research such things.