Is autorun.ini a virus?

not too long ago i caught a junk usb
virus that turned all files on any usb
port connected devices into shortcuts. i then
downloaded usbfix which removed
this virus. but now its leaving a
folder called autorun.ini on my
devices and it cant be deleted. also
some of the movies i try to watch on
my pc either get cut off in the
middle or dnt play at all. is autorun a
virus or a vaccine usb fix created.
and how do.i solve d issue of.movies
that wont.play. and are these two issues connected