My Viewsonic LCD monitor flashes on and off depending on what I am viewing. I can view pages in any program that has writing or a small number of small pictures without too much trouble. A web page with lots of pictures or the desktop and screen saver are the worst. The monitor flashes off so much on these last pages that I can barely see the page long enough to move the mouse and open a program or expand one from the start bar. I have checked cables, changed power cord, and checked video card drivers. Viewsonic website was no help. Anyone with any ideas?