My Canon PowerShot SD1100 IS Digital Elph won't turn on. I recharged the battery and put it back in, but every time I push the "on" button there are several beeping noises and the screen says "Lens error, restart camera."

This should help.

I've had similar problems with various versions of this camera. Here's the fix, if all else fails. These are step-by-step instructions to take apart and fix the camera's lens error. http://johnsmouth.wordpress.com/2010/12/01/lens-error/

THE ONLY THING I HAVE BEEN ABLE TO FIND ON THIS PROBLEM IS THAT IT CAN BE CAUSED BY A VARIETY OF THINGS. IT SAYS IT CAN HAPPEN IF DROPPED,BUMPED, OR HIT AND THAT THE POSSIBLE CORRECTIONS ARE EITHER SWITCHING THE CAMERA ON AND OFF REPEATEDLY, OR GENTLE PRESSURE ON THE LENS WHEN YOU TURN IT ON TO TRY TO ALIGN THE TRACK. NOT MUCH HELP FROM CANON. THE OTHER IS SEND IT FOR REPAIR, BUT I CAUTION AGAINST THIS, BECAUSE 1 REVIEW STATED CANON WANTED $130.00 TO REPAIR THE CAMERA, WHICH IS WAY OVER 50% OF THE TOTAL COST. IF THESE FIXES DON'T WORK, YOU MAY BE LOOKING FOR ANOTHER CAMERA. SORRY. IF YOU NEED MORE HELP, REPLY TO ARCLIGHT1217