Sidebar Issue-Recent Posts and Meta showing up in Sidebar,Should Only be Links

I am new to wordpress. My sidebars were working properly for the last couple of weeks, but now "recent posts " and "meta" are showing up in my sidebar. I had 2 links sidebars, and another sidebar. But the other information showed up this morning. I have tried removing all sidebars and starting again, but that did not work. I checked the pages, and their should be no comments on any of my pages. How can I remove these from the side bar ? Thanks.