topic Re: My T4i is completely unresponsive. I have tried different cards, batteries and lenses. Ideas? in EOS DSLR & Mirrorless Cameras https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-T4i-is-completely-unresponsive-I-have-tried-different-cards/m-p/127096#M67997 <P>Call Canon Service for a repair form.</P> Mon, 01 Dec 2014 14:32:33 GMT ebiggs1 2014-12-01T14:32:33Z My T4i is completely unresponsive. I have tried different cards, batteries and lenses. Ideas? https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-T4i-is-completely-unresponsive-I-have-tried-different-cards/m-p/127082#M67996 <P>I have checked that all doors are latched and that no door sensor is stuck.&nbsp; I also cannot access the camera via USB as my computer does not "see" that anything is plugged in.&nbsp; Thus, I cannot try to install any new firmware.&nbsp;</P> Mon, 01 Dec 2014 03:52:25 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-T4i-is-completely-unresponsive-I-have-tried-different-cards/m-p/127082#M67996 Tom_X 2014-12-01T03:52:25Z Re: My T4i is completely unresponsive. I have tried different cards, batteries and lenses. Ideas? https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-T4i-is-completely-unresponsive-I-have-tried-different-cards/m-p/127096#M67997 <P>Call Canon Service for a repair form.</P> Mon, 01 Dec 2014 14:32:33 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/My-T4i-is-completely-unresponsive-I-have-tried-different-cards/m-p/127096#M67997 ebiggs1 2014-12-01T14:32:33Z