halp me plz

[Rosar]

so i was like half asleep today and playin round and tring to install obivion and idk what i did i might have clicked somthing wrong but now all my other stuff like firefox vent warhammer and games has a utorrent symbol infornt of it and when i try to run it opens utorrent and says unable to load (firefox)

invalid torrent file im on now cuz im on my laptop hurry plz (