You need to understand that this is a personal problem of yours, not every player has the same problem as you. We are nice enough to spend time to help you find what the issue is, but there is no reason for cocky behavior and demands.
This is a free server and a free community.
Now, you should try reinstalling your graphics drivers both for the Intel and Nvidia graphics cards, and provide more info about what the problem is and how it exactly happens. What are you doing when it happens? Does it happen if you stay afk? Do you switch focus to another window?