I recently had this problem and I was able to discover that I had a bad profile. I logged in as another person on my computer and I was able to use all of my programs. However when I logged in as myself,I was not able to use any programs. Also when I logged in as Admin everything worked fine. So here is what I did. I went in as Admin and deleted my old profile. Then I logged out and logged back in as myself. After doing this I logged back out and then logged back in as Administrator and copied the Administrative profile to my profile and logged back in as myself and now everything works good.