I have checked and rerun Windows update multiple times.  Have uninstalled and reinstalled ProSeries as well.  Have consulted with Microsoft, my computer manufacturer, and Geek Squad as well as ProSeries support many times.  The first three say it has to be a ProSeries problem because everything else on my system runs perfectly.  ProSeries support has finally sent the problem to the next tier of support (or so I'm told) but have not resolved the problem as yet.