I have similar problem. I can't customize my start menu (like drag items, or pin items to start). It might be because you have some programs installed on your computer. In my case, I found that I have a "hohosearch" something or whatever on my list of installed programs in which I know that I did not install myself. What I did was uninstalled it and then after that, I can now pin to start and customize (drag items) to start. I hope it might help.