I upgraded to Windows 10 three days ago and I now have innumerable problems. Firstly I can't open the start menu. If I right click on it I get the usual context menu but left clicking doesn't activate the new start menu. Secondly although I have the search bar I'm not able to type in my search requirement. Thirdly, although I have task bar icons for Edge and the Windows Store I am unable to open either them. As you can imagine my windows 10 is pretty useless to me. Any helpful suggestions will be welcome.