Hi I am currently using Windows 10 and presently suffering from a big issue. There is a single file which installed by itself on June 1st and now it is taking 364 GB of my 460 Gb hdd. Following is the details of the issue:-

I have already tried the following:-
1)deleted the restore points and shadow copy
2)restarted the system restore after deleting the backups and stopping it
3)did disk cleanup for system
4)did virus check
5)removed all backup and restore points
6)ran disk fragmentation and cc cleaner as well
Currently the situation is :-
I have tried everything and cannot reinstall the Os due to some application issues. Need any assistance to resolve. please help. I am using windows 10 so any suggestion based on other OS is of no use for me. please help
regards
Saurav