I have downloaded my photos and videos from my phone to my Dell laptop. Some of the photos and videos play just fine. About half do not. I get an error message saying "Photo Gallery cannot open this photo or video. The file may be unsupported, damaged, or corrupted." I get a similar message when I used Media Player. I have tried to download from a SIM card reader. I took my laptop to a Verizon store and they could not figure out the issue. All of the photos appear and all of the videos play on the phone itself. However, I want to back them up as I have recently gotten the Samsung Galaxy SIII. If I can't figure this out, I will have to keep the Droid X forever. These are photos and videos of my daughter. I am at my witts end. Can anyone help?