Hi, when you plug in an external mic you must set your levels manually. If you leave the audio setting at auto it will set a very high level depending on its omini directional mic properties and this will certainly not be desirable. I believe you can...
This answer from the product expert also makes sense and should be another sure way to download your recordings. Unless of course your SD slot is also malfunctioning? In that case you are STUCK!
What are you trying to download? Pictures or video? 10 years of video means the camcorder was hardly used in the period? I have used the G20 for about 3 years now and I have constantly downloaded videos over USB safely and I am using windows 10. I do...
Have you installed the Video browser software that comes with the camera? That is what allows you to download from the camera especially when windows does not recognize it.