Your last post, Original. I asked a number of questions which you still have not answered. Difficult to offer advice when the only information is that sometimes "Your favourite game is fuzzy" So any chance of a bit more info?
You could probable add a graphics card as you are using what is known as on-board graphics which means the graphics card is built into the motherboard.
But first check that you have up too date drivers. Go here Intel, and click on automatically detect and update drivers and software and follow the on screen instructions. See if that fixes your problem.