create backup.bat (in the folder with AFUWIN.exe) with next content: AFUWIN /O run this bat file as Administrator (right mouse click and select "as Administrator" )
When you will have access to the computer with DOS pre-installed? (I have an idea how to add a marker, but it needs to be checked)
which marker tool? and how can I use it ? I can test it in the mean time on other PC (M91) and check if it works