Do you have a desktop- and can the unit download anything?
If no and no- download it on another machine and put it on a memory stick/thumb drive. Use CTRL+ALT+DEL to bring up the Task Manager. On the Applications tab, hit New Task and navigate to the utility, and run it from there.
You didn’t read my list of things disabled. All drives are unavailable. You can’t run programs from the start menu. That’s also true in safe mode.
Now I’m sure there’s a way to get something done from the command line, but if you are supporting a business and people are standing over your shoulder, you do what you know will get the job done without experimenting.
a windows reinstall deletes and replaces all system files and rebuilds the registry from scratch. The bad side effect is you have to reinstall all your programs. In a business environment that mostly means Office, which takes about ten minutes.