Perhaps you can start by running sfc /scannow to make sure your system files are intact.
Update was quick and easy but it changed the fonts in the drop down menus in Chrome. Not a biggie except even in Chrome settings I can't change them back. Am using IE11 again and so far no problems. A month ago I couldn't get by one session without having to shut down IE11 and that's why I changed to Chrome.
Everything else seems fine.