Ok so my cannon will not turn on. My battery had died a couple days ago (or so the screen told me) and after i changed the battery still nothing. It only takes AA batteries so its not like its brain surgery (or shouldnt be

)
Back story: my camera was setting off sensors at stores (particularry walmart & macys) so one day at walmart a clerk ran a thing over it to deactivate it. It worked fine after that. I used it for days...but then when the battery dies its like th wwhole camera did.
What gives? Cany anyone help?