Task Bar Compromised

After the last update, my taskbar is "cut in half" in other words, the top of the icons are visible, and I have to guess --mostly correct--what I am trying to click on. I have called Microsoft and the technician talked to me, I thought he would help, but the usual "click" and he was gone. I have tried all other remedies suggested, but nothing addresses this particular problem. I have tried moving the task bar to the side, rather than the bottom, but it still presents with only half. Any ideas what else I could try? Every update something else goes hinky, I think this is one of my lesser evils in a dozen of disasters, it is just annoying.