I once noticed that whenever I played a game I got some artifacts which got worse and worse. Like white squares that appeared and disappeared on random spots on the screen.
I figured it must have been the graphics card and read somewhere that if you bake it in the oven this resolders the contacts and then it works great against.
So when my parents were away I baked my graphics card in our oven for 45 minutes at about 180°C. Unfortunately, after I had hooked up everything against the artifacts had gotten so much worse that I couldn't even use it in normal operation anymore.
When it comes to repairing high tech electronics I am not the best.