Sputtering then stopped running and wont turn over.
Wont turn over are you sure as wont start is differant than wont run
Wont start could be Battery/starter/or engine siezed.
Wont run is not the same,,, that could be lacking power /low on oil/water/ Fuel/or even engine lacking power like down on compression which is all the above plus more ....
So check it out let us know again. Ron