hello, I have a Canon EOS 90D. While I was doing a photo shoot my camera started to freeze up then it start to glitch the screen would go black then when I turned the camera off the top screen would stay on. for a little bit it would turn on and would not focus then it would glitch again. I switched the batteries to new charged ones now it won't turn on. I changed the SD card to a brand new nothing changed. I'm not sure what happened and really wish to fix this problem.
