Hello, the laptop of HP in our department has a black screen, and it keeps restarting. What is the reason? Is there any room for redemption?

You can find a skilled repairman to help you try to repair it, which is usually caused by loose parts or virtual soldering of chips. Common causes: loose memory or problems with the memory itself, try to reinsert the memory or replace the root memory; The motherboard power chip is welded or aged, the shielded wire is loose or the motherboard power circuit is short-circuited; Graphics card, South Bridge and North Bridge BGA package chips are soldered or damaged. Generally, there are many cases of virtual welding, so it is good to add welding. Solution to notebook hardware question