Twitches the cursor (Borderlands 2)

just a couple of days ago I installed a crack of the voice, and began. the bottom line is that the mouse cursor twitches and clicks by itself. type.. I go and shoot because the game thinks I did press on the left mouse button, although I didn't touch anything. in the main menu, the cursor moves and clicks randomly, sometimes just click on continue becomes a hard task. went to reinstall the game, checked file integrity. nothing helps. don't know what to do