So I put in Guitar Hero II and was rocking out for a while, let my sisters play for a while and then I'm playing Every Time I Die "The New Black" on hard and I played the whole thing through.

Then I put the controller down to piss and my sister yells at me, "what did you do to the controller?!"

Turns out the strum bar doesn't work anymore.

How do I fix this?

First time I play GHII in months and it breaks.