It does snap and there is a blinking says busy

It would seem that the camera is having issues completing its Power On Self Test or POST. In this particular camera this can be caused by two main issues.

• Mainboard Failure - The camera has physical damage internally that is preventing the mainboard from competing its power on sequence and presenting you with an error code. (Bad - only canon can fix this)
• Corrupted Firmware - The software that runs the camera is corrupted preventing the camera from properly starting. (There is hope - read on!)

I have had success with reloading the firmware on my old camera when this same error happened after I left my camera in my minivan on a sweltering day. Follow the link below for the latest firmware and instructions on how to reload it.

http://web.canon.jp/imaging/eosd/firm-e/...