Hi there, I've been unable to apply any windows updates since 2015, or use a variety of other Windows 8 functions. I initially thought it was a "Classic Shell" program I used to give myself a start menu, but having uninstalled it, it's made no apparent difference to the issue at hand. I can also no longer "Change PC Settings" in the settings tab, which has made things even more difficult. I'd seriously appreciate some help,thank you.