Movie from ~1985 about “hacking”. Central character is a boy, who has a (girl)friend, living in some sandy terrain. Might be a bit romantic between them.
One scene, some people on motorcycle are destroying their computer by running over it.

Boy creates(?) a computer figure (animated face on screen, looks like photo), that somehow goes rouge, and boy finally destroys it with putting some “stick-figures with a bat” over the screen.

Edited question