I recently got Assassin's Creed II during the Steam Holiday Sale. I had played Assassin's Creed with my wired XBox 360 Controller without a problem, and I was looking forward to using it for this game.
However, when I went to the options menu to select controls, the controller was not available in the menu. The only options there were Keyboard, Keyboard (alternate), Keyboard + Mouse (2 buttons), and Keyboard + Mouse (5 buttons). The controller is plugged in and turned on, and I am able to use it in other games such as HL2, Portal 2, Steam Big Picture, and Assassin's Creed I.
If anyone has any help, it would be much appreciated, I have no idea what is going on and why it won't find my controller. Thanks