That has hapend to me so much! i know just what to do. pres esc on your keyboard, or open your spellbook and click the gear. then at the top of the book, find the tab thing that says game opshins (sry, bad speller) then find where it says quest helper, and click on. :-D hope that helped.
mike skull blood death/life lvl 42 Long live that fang! (the order)