I need some help! (read description)

So, i was on my computer when this big internet explorers search bar opens at the top of my screen. i cant use the modern io because when i type somthing in a new tab, it dosent work. it is also messing with my schoolwork and i cant get rid of it i am on my computer now so ya. it is stuck at the top at every tab and i cant do my schoolwork. i have a windows 10 touch screen computer. it is the tab at the very top and it dosent show below (i am doing a report om Voyager 1 and 2)