None of the suggested solutions worked for me and my Elph 300HS. However, I took it apart, removing the back. There was a screw inside holding on the front panel which I could not budge no matter what, so I gave up. I put it back together, reinserted the battery, powered on and voila, it was back to normal. Perhaps disconnecting the battery for a while was key. Had I not tried the multi-step approach suggested, it would still be stuck.
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None of the suggested solutions worked for me and my Elph 300HS. However, I took it apart, removing the back. There was a screw inside holding on the front panel which I could not budge no matter what, so I gave up. I put it back together, reinserted the battery, powered on and voila, it was back to normal. Perhaps disconnecting the battery for a while was key. Had I not tried the multi-step approach suggested, it would still be stuck.