I am using a Sapphire PULSE Radeon rx 570 4gb and it often creates black vertical lines while using it on any web page. It also creates random colorful lines when prompted to play videos and games. I have tried installing drivers but to no avail. I have also tried physically taking the GPU out and adjusting it. All HDMI cables are secure. Is my GPU broken, or is there something else I can do? Could this possibly be a monitor issue?