Technical problem

Ever since last year my GPU started crashing (black screen or purple screen)

The only way I've found to fix it is to underclock. But it gets progressively worse and the crashes keep coming back after a few months of working normally. I started with -100 now I'm at -400. I have to keep lowering my clock to maintain stability.

What does this mean?

What do you do as a parent if you see some kids bullying your child? You can't hit the kids or they will report you as a pedo or just claim you attacked them and you go to jail. What the fuck can you do? Call the cops? The minors won't get in trouble. What is the winning move??