Screen Blinks

Ive noticed when blender is running (ver 2.77) that my screen will occasionally blink. It appears to be completely at random. Using a vanilla version no add ons or anything. It does it regardless of the mode I am. Randering, UV mapping what have you. It’s something I have just noticed since starting with blender a few days ago. I have updated my Radeon drivers to the newest version. I was just wondering if anyone has seen similar activity.

Thanks