Deadly Friend (1986)

Paul Conway and his mother Jeannie Conway travel to a new town where Paul will join the local university invited by Dr. Johanson. They bring the robot BB that was developed by Paul, who is a genius in robotics. Paul befriends the paperboy, Tom Toomey, and has a crush on his next door neighbor, Samantha Pringle, whose abusive alcoholic father Harry Pringle frequently hurts her. One day, Paul, Sam, Tom and BB are playing basketball and the ball falls in the field of their paranoid grumpy neighbor Elvira Parker who won't give it back to the teenagers. On Halloween, Tom convinces Paul to let BB open the padlock of the entrance to Elvira's house. However, there is an alarm system and Elvira blows up BB with her shotgun. Then Harry pushes his daughter down the stairs, and the doctors leave her brain-dead connected to life support. However, Paul convinces Tom to go to the hospital to rescue Sam, and then he implants BB's chip into her brain, resurrecting Samantha. But will she come back to life normal?