I did some more testing on the M100 camera. Viewing the videos through the camera viewing screen, they work 100% with no freezes and starts. I then plugged the USB cord into the computer first, then with the camera in the off position, I plugged the USB cord into the camera. After a short time the computer acknowledged the USB etc. as new found hardware which it is supposed to. The camera shows the USB on the viewing screen. (The camera is left in the off position). Double click "my computer" icon on the computer screen, select the drive that the camera is on and double click. This opens up for your camera pictures and videos. Double clicking on a video, it played 100% with no freezes or starts, as happened when just using the USB card in the computer. Results: 1)this camera format on the SD card may not be fully compatible with the computer, 2)may need a faster SD card as was suggested to me on another forum, this I'll purchase and retest.