General :: Bad Video - Square Boxes Appearing At Random Places

I have a couple things I think is my video card. One annoying thing it does is to put half inch square boxes in random places and times that might be trying to display what was in that spot before you changed the window. Sometimes it can be important information so I had to find a way to do something about it. I couldn't get rid of them but I could move them out of the way by moving the pointer to a different area and turning the scroll wheel. That would put the square in the new area where the pointer was.

The other thing is very bad scroll control. Sometimes I would have to use the arrows in the corner. Sometimes I had to drag the slider which moved hard, not at all or very delayed. The squares also make highlighting very difficult. Because an area will not be highlighted you don't know the results until you paste it. It might be perfect. I believe the video card is on the motherboard. I do have a spare slot so If needed I could put in a new one. Where is my title bar at the top of a screen which allows you to move it around or -minimize or maximize or close.