I can't open the start button or search bar or anything I pinned to it and also the startup this morning. Whenever I point my mouse to the taskbar, it just seems to be busy icon and clicking on anything does nothing.
But I shutdown for a few hours and startup again just now, and now it seems like its functioning again. I even did a restart a few times and no more freezing. I will monitor a few days before trying the tsteo77's link.