1981 Clint Howard in EVILSPEAK

Evilspeak is a 1981 American horror film about a bullied military academy cadet who uses a computer to summon Satan and exact bloody revenge on his tormentors. It is considered a cult classic and was once banned in the United Kingdom as a "video nasty" due to its graphic violence
Director: Eric Weston
Writers: Eric Weston and Joseph Garofalo
Starring:
Clint Howard as Stanley Coopersmith
R.G. Armstrong as Sarge
Joseph Cortese as Reverend Jameson
Richard Moll as Father Lorenzo Esteban
Don Stark as Bubba Caldwell (head bully)
Reviews: Critics and audiences often describe the film as a low-budget, "so bad, it's good" cult classic. Reviewers from sources like PopMatters and DVD Verdict note its slow pacing but praise its bizarre premise, solid performances (especially from Howard), and memorable, over-the-top gory finale.
"Video Nasty" status: The film gained notoriety in the UK for being one of the films banned under the Video Recordings Act of 1984 due to its graphic violence and satanic themes. It was later passed uncut in 2004.
Influence: The film is noted as an early example of "techno-horror", using a computer as a conduit for evil and foreshadowing later films that would explore technology-related fears.