Help please: Images become puzzle pieces with my GX7

I have a Panasonic Lumix DMC GX7.  When I look at pictures on the touch screen/monitor the images look normal, but after I download them to my computer and view them, some are chopped up into pieces.  The chopped pieces vary in shape and size and are laid out like puzzle pieces that are in the wrong place. It's random.  Some are:

- discolored

- shifted out of position (a lower corner may be in the top center)

- "zoomed-in" sections- some just altered in a couple of ways, others a total mess.

Does anyone know what might be going here?  If so what can I do?  If not, any suggestions?  I have a trip coming up and would like to make sure this doesn't happen again.

This was a beautiful scene...

You bought your cam brand new or used? How old is your cam and when the problem 1st happened?

When you have a normal review in camera, the file should have been written and saved properly. Would it be a problem on your computer side and the image viewer you used?

Does your cam still under warranty?

The .jpg files got damaged. This may either have happened when they were saved in the camera or when they were transfered to the computer.  It doesn't mean much that they looked good on the camera because for that, cameras usually use smaller preview images that are embedded in the image files (but it may use the full image when you zoom in far enough).  I'd start by trying to take some images on a different memory card, preferably formatted in the camera, and by trying to read the original files on a different device that has a card slot, or using a different transfer method (e.g. wifi, cable).

Corrupt memory card?

Good luck.

Curious - this pic is nearly a year old - any problems since then?

EXIF shows that it was shot using Scene mode, is this something all the glitched ones have in common?

How are you getting the images to your comp - SD card, cable or Wifi?

If you still have the images on card do you get the same result using different transfer methods?

I would dump the card and reset the camera - make sure a cards are always formatted in camera - never in comp.

Also error check the memory card when plugged into your PC using chkdsk [SD card drive letter] /f

Looks like an incompatible card. Had something similar happen on a Nikon years ago.

I had a similar problem with my Olympus PM2. I tried exporting the un edited picture to the desktop and that copy was fine. I was using iPhoto at the time. That problem hasn't happened since using Photos that came with the MacOS upgrade.

Export the image to your desktop, then open. See if the problem persist in that file. That’s what I did when I had a picture in a picture. A software update fixed the problem.  YMMV